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Finding the Fourth Proportional to 51,630.40, 77,330.40 and 42,414.40

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Solution

The fourth proportional to 51,630.40, 77,330.40 and 42,414.40 is: 63,526.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,630.40 : 77,330.40 = 42,414.40 : x
  2. Step 2: Convert to fraction form
    51,630.40/77,330.40 = 42,414.40/x
  3. Step 3: Cross multiply
    51,630.40x = 77,330.40 × 42,414.40
  4. Step 4: Simplify right side
    51,630.40x = 3,279,922,517.76
  5. Step 5: Solve for x
    x = 3,279,922,517.76/51,630.40
  6. Step 6: Final answer
    x = 63,526.96

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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.