Home / 39,819,157,917.12-54,950,459,971.68-21,508,215,508.80

Finding the Fourth Proportional to 39,819,157,917.12, 54,950,459,971.68 and 21,508,215,508.80

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Solution

The fourth proportional to 39,819,157,917.12, 54,950,459,971.68 and 21,508,215,508.80 is: 29,681,349,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,819,157,917.12 : 54,950,459,971.68 = 21,508,215,508.80 : x
  2. Step 2: Convert to fraction form
    39,819,157,917.12/54,950,459,971.68 = 21,508,215,508.80/x
  3. Step 3: Cross multiply
    39,819,157,917.12x = 54,950,459,971.68 × 21,508,215,508.80
  4. Step 4: Simplify right side
    39,819,157,917.12x = 1,181,886,335,378,581,356,544
  5. Step 5: Solve for x
    x = 1,181,886,335,378,581,356,544/39,819,157,917.12
  6. Step 6: Final answer
    x = 29,681,349,310.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.