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Finding the Fourth Proportional to 88,838.70, 133,039.35 and 42,036.90

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Solution

The fourth proportional to 88,838.70, 133,039.35 and 42,036.90 is: 62,951.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,838.70 : 133,039.35 = 42,036.90 : x
  2. Step 2: Convert to fraction form
    88,838.70/133,039.35 = 42,036.90/x
  3. Step 3: Cross multiply
    88,838.70x = 133,039.35 × 42,036.90
  4. Step 4: Simplify right side
    88,838.70x = 5,592,561,852.02
  5. Step 5: Solve for x
    x = 5,592,561,852.02/88,838.70
  6. Step 6: Final answer
    x = 62,951.87

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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.