Home / 81,366.18-112,280-45,555.86

Finding the Fourth Proportional to 81,366.18, 112,280 and 45,555.86

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Solution

The fourth proportional to 81,366.18, 112,280 and 45,555.86 is: 62,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,366.18 : 112,280 = 45,555.86 : x
  2. Step 2: Convert to fraction form
    81,366.18/112,280 = 45,555.86/x
  3. Step 3: Cross multiply
    81,366.18x = 112,280 × 45,555.86
  4. Step 4: Simplify right side
    81,366.18x = 5,115,011,960.80
  5. Step 5: Solve for x
    x = 5,115,011,960.80/81,366.18
  6. Step 6: Final answer
    x = 62,864.10

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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.