Home / 42,085.71-63,138.29-12,502.89

Finding the Fourth Proportional to 42,085.71, 63,138.29 and 12,502.89

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Solution

The fourth proportional to 42,085.71, 63,138.29 and 12,502.89 is: 18,757.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,085.71 : 63,138.29 = 12,502.89 : x
  2. Step 2: Convert to fraction form
    42,085.71/63,138.29 = 12,502.89/x
  3. Step 3: Cross multiply
    42,085.71x = 63,138.29 × 12,502.89
  4. Step 4: Simplify right side
    42,085.71x = 789,411,094.66
  5. Step 5: Solve for x
    x = 789,411,094.66/42,085.71
  6. Step 6: Final answer
    x = 18,757.22

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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.