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Finding the Fourth Proportional to 77,703.60, 116,338.38 and 42,037.38

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Solution

The fourth proportional to 77,703.60, 116,338.38 and 42,037.38 is: 62,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,703.60 : 116,338.38 = 42,037.38 : x
  2. Step 2: Convert to fraction form
    77,703.60/116,338.38 = 42,037.38/x
  3. Step 3: Cross multiply
    77,703.60x = 116,338.38 × 42,037.38
  4. Step 4: Simplify right side
    77,703.60x = 4,890,560,688.64
  5. Step 5: Solve for x
    x = 4,890,560,688.64/77,703.60
  6. Step 6: Final answer
    x = 62,938.66

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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.