Home / 53,988.35-81,009.87-36,421.28

Finding the Fourth Proportional to 53,988.35, 81,009.87 and 36,421.28

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Solution

The fourth proportional to 53,988.35, 81,009.87 and 36,421.28 is: 54,650.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,988.35 : 81,009.87 = 36,421.28 : x
  2. Step 2: Convert to fraction form
    53,988.35/81,009.87 = 36,421.28/x
  3. Step 3: Cross multiply
    53,988.35x = 81,009.87 × 36,421.28
  4. Step 4: Simplify right side
    53,988.35x = 2,950,482,752.98
  5. Step 5: Solve for x
    x = 2,950,482,752.98/53,988.35
  6. Step 6: Final answer
    x = 54,650.36

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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.