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Finding the Fourth Proportional to 77,882.92, 107,478.36 and 42,072.92

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Solution

The fourth proportional to 77,882.92, 107,478.36 and 42,072.92 is: 58,060.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,882.92 : 107,478.36 = 42,072.92 : x
  2. Step 2: Convert to fraction form
    77,882.92/107,478.36 = 42,072.92/x
  3. Step 3: Cross multiply
    77,882.92x = 107,478.36 × 42,072.92
  4. Step 4: Simplify right side
    77,882.92x = 4,521,928,442.01
  5. Step 5: Solve for x
    x = 4,521,928,442.01/77,882.92
  6. Step 6: Final answer
    x = 58,060.59

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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.