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Finding the Fourth Proportional to 74,597.76, 102,915.36 and 51,930.72

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Solution

The fourth proportional to 74,597.76, 102,915.36 and 51,930.72 is: 71,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,597.76 : 102,915.36 = 51,930.72 : x
  2. Step 2: Convert to fraction form
    74,597.76/102,915.36 = 51,930.72/x
  3. Step 3: Cross multiply
    74,597.76x = 102,915.36 × 51,930.72
  4. Step 4: Simplify right side
    74,597.76x = 5,344,468,743.86
  5. Step 5: Solve for x
    x = 5,344,468,743.86/74,597.76
  6. Step 6: Final answer
    x = 71,643.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.