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Finding the Fourth Proportional to 77,381.59, 106,514.58 and 67,798.89

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Solution

The fourth proportional to 77,381.59, 106,514.58 and 67,798.89 is: 93,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,381.59 : 106,514.58 = 67,798.89 : x
  2. Step 2: Convert to fraction form
    77,381.59/106,514.58 = 67,798.89/x
  3. Step 3: Cross multiply
    77,381.59x = 106,514.58 × 67,798.89
  4. Step 4: Simplify right side
    77,381.59x = 7,221,569,760.24
  5. Step 5: Solve for x
    x = 7,221,569,760.24/77,381.59
  6. Step 6: Final answer
    x = 93,324.13

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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.