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Finding the Fourth Proportional to 77,170.68, 106,488.54 and 48,875.76

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Solution

The fourth proportional to 77,170.68, 106,488.54 and 48,875.76 is: 67,444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,170.68 : 106,488.54 = 48,875.76 : x
  2. Step 2: Convert to fraction form
    77,170.68/106,488.54 = 48,875.76/x
  3. Step 3: Cross multiply
    77,170.68x = 106,488.54 × 48,875.76
  4. Step 4: Simplify right side
    77,170.68x = 5,204,708,323.79
  5. Step 5: Solve for x
    x = 5,204,708,323.79/77,170.68
  6. Step 6: Final answer
    x = 67,444.12

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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.