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Finding the Fourth Proportional to 77,488.68, 106,933.38 and 45,658.92

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Solution

The fourth proportional to 77,488.68, 106,933.38 and 45,658.92 is: 63,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,488.68 : 106,933.38 = 45,658.92 : x
  2. Step 2: Convert to fraction form
    77,488.68/106,933.38 = 45,658.92/x
  3. Step 3: Cross multiply
    77,488.68x = 106,933.38 × 45,658.92
  4. Step 4: Simplify right side
    77,488.68x = 4,882,462,642.75
  5. Step 5: Solve for x
    x = 4,882,462,642.75/77,488.68
  6. Step 6: Final answer
    x = 63,008.72

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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.