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Finding the Fourth Proportional to 42,884,709.54, 64,274,363.07 and 19,824,451.20

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Solution

The fourth proportional to 42,884,709.54, 64,274,363.07 and 19,824,451.20 is: 29,712,314.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,884,709.54 : 64,274,363.07 = 19,824,451.20 : x
  2. Step 2: Convert to fraction form
    42,884,709.54/64,274,363.07 = 19,824,451.20/x
  3. Step 3: Cross multiply
    42,884,709.54x = 64,274,363.07 × 19,824,451.20
  4. Step 4: Simplify right side
    42,884,709.54x = 1,274,203,974,092,297.25
  5. Step 5: Solve for x
    x = 1,274,203,974,092,297.25/42,884,709.54
  6. Step 6: Final answer
    x = 29,712,314.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.