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Finding the Fourth Proportional to 60,390.36, 90,537.90 and 38,156.88

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Solution

The fourth proportional to 60,390.36, 90,537.90 and 38,156.88 is: 57,205.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,390.36 : 90,537.90 = 38,156.88 : x
  2. Step 2: Convert to fraction form
    60,390.36/90,537.90 = 38,156.88/x
  3. Step 3: Cross multiply
    60,390.36x = 90,537.90 × 38,156.88
  4. Step 4: Simplify right side
    60,390.36x = 3,454,643,785.75
  5. Step 5: Solve for x
    x = 3,454,643,785.75/60,390.36
  6. Step 6: Final answer
    x = 57,205.22

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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.