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Finding the Fourth Proportional to 60,288.98, 90,431.64 and 15,915.96

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Solution

The fourth proportional to 60,288.98, 90,431.64 and 15,915.96 is: 23,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,288.98 : 90,431.64 = 15,915.96 : x
  2. Step 2: Convert to fraction form
    60,288.98/90,431.64 = 15,915.96/x
  3. Step 3: Cross multiply
    60,288.98x = 90,431.64 × 15,915.96
  4. Step 4: Simplify right side
    60,288.98x = 1,439,306,364.97
  5. Step 5: Solve for x
    x = 1,439,306,364.97/60,288.98
  6. Step 6: Final answer
    x = 23,873.46

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Similar ratio
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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.