Home / 97,402.91-134,438.40-57,129.65

Finding the Fourth Proportional to 97,402.91, 134,438.40 and 57,129.65

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Solution

The fourth proportional to 97,402.91, 134,438.40 and 57,129.65 is: 78,852.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,402.91 : 134,438.40 = 57,129.65 : x
  2. Step 2: Convert to fraction form
    97,402.91/134,438.40 = 57,129.65/x
  3. Step 3: Cross multiply
    97,402.91x = 134,438.40 × 57,129.65
  4. Step 4: Simplify right side
    97,402.91x = 7,680,418,356.28
  5. Step 5: Solve for x
    x = 7,680,418,356.28/97,402.91
  6. Step 6: Final answer
    x = 78,852.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.