Home / 44,515.50-66,780.81-21,129.18

Finding the Fourth Proportional to 44,515.50, 66,780.81 and 21,129.18

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Solution

The fourth proportional to 44,515.50, 66,780.81 and 21,129.18 is: 31,697.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,515.50 : 66,780.81 = 21,129.18 : x
  2. Step 2: Convert to fraction form
    44,515.50/66,780.81 = 21,129.18/x
  3. Step 3: Cross multiply
    44,515.50x = 66,780.81 × 21,129.18
  4. Step 4: Simplify right side
    44,515.50x = 1,411,023,755.04
  5. Step 5: Solve for x
    x = 1,411,023,755.04/44,515.50
  6. Step 6: Final answer
    x = 31,697.36

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1.5x scale

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.