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Finding the Fourth Proportional to 76,990.81, 115,490.31 and 24,404.40

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Solution

The fourth proportional to 76,990.81, 115,490.31 and 24,404.40 is: 36,607.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,990.81 : 115,490.31 = 24,404.40 : x
  2. Step 2: Convert to fraction form
    76,990.81/115,490.31 = 24,404.40/x
  3. Step 3: Cross multiply
    76,990.81x = 115,490.31 × 24,404.40
  4. Step 4: Simplify right side
    76,990.81x = 2,818,471,721.36
  5. Step 5: Solve for x
    x = 2,818,471,721.36/76,990.81
  6. Step 6: Final answer
    x = 36,607.90

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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.