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Finding the Fourth Proportional to 60,367.79, 90,531.17 and 20,915.69

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Solution

The fourth proportional to 60,367.79, 90,531.17 and 20,915.69 is: 31,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,367.79 : 90,531.17 = 20,915.69 : x
  2. Step 2: Convert to fraction form
    60,367.79/90,531.17 = 20,915.69/x
  3. Step 3: Cross multiply
    60,367.79x = 90,531.17 × 20,915.69
  4. Step 4: Simplify right side
    60,367.79x = 1,893,521,887.06
  5. Step 5: Solve for x
    x = 1,893,521,887.06/60,367.79
  6. Step 6: Final answer
    x = 31,366.43

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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.