Home / 40,761.15-61,129.11-19,688.10

Finding the Fourth Proportional to 40,761.15, 61,129.11 and 19,688.10

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Solution

The fourth proportional to 40,761.15, 61,129.11 and 19,688.10 is: 29,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,761.15 : 61,129.11 = 19,688.10 : x
  2. Step 2: Convert to fraction form
    40,761.15/61,129.11 = 19,688.10/x
  3. Step 3: Cross multiply
    40,761.15x = 61,129.11 × 19,688.10
  4. Step 4: Simplify right side
    40,761.15x = 1,203,516,030.59
  5. Step 5: Solve for x
    x = 1,203,516,030.59/40,761.15
  6. Step 6: Final answer
    x = 29,526.06

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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.