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Finding the Fourth Proportional to 67,438.71, 101,153.21 and 29,987.55

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Solution

The fourth proportional to 67,438.71, 101,153.21 and 29,987.55 is: 44,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,438.71 : 101,153.21 = 29,987.55 : x
  2. Step 2: Convert to fraction form
    67,438.71/101,153.21 = 29,987.55/x
  3. Step 3: Cross multiply
    67,438.71x = 101,153.21 × 29,987.55
  4. Step 4: Simplify right side
    67,438.71x = 3,033,336,792.60
  5. Step 5: Solve for x
    x = 3,033,336,792.60/67,438.71
  6. Step 6: Final answer
    x = 44,979.16

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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.