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Finding the Fourth Proportional to 60,144.64, 90,157.43 and 28,498.75

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Solution

The fourth proportional to 60,144.64, 90,157.43 and 28,498.75 is: 42,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,144.64 : 90,157.43 = 28,498.75 : x
  2. Step 2: Convert to fraction form
    60,144.64/90,157.43 = 28,498.75/x
  3. Step 3: Cross multiply
    60,144.64x = 90,157.43 × 28,498.75
  4. Step 4: Simplify right side
    60,144.64x = 2,569,373,915.72
  5. Step 5: Solve for x
    x = 2,569,373,915.72/60,144.64
  6. Step 6: Final answer
    x = 42,719.92

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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.