Home / 83,432.70-115,155.27-55,141.02

Finding the Fourth Proportional to 83,432.70, 115,155.27 and 55,141.02

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Solution

The fourth proportional to 83,432.70, 115,155.27 and 55,141.02 is: 76,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,432.70 : 115,155.27 = 55,141.02 : x
  2. Step 2: Convert to fraction form
    83,432.70/115,155.27 = 55,141.02/x
  3. Step 3: Cross multiply
    83,432.70x = 115,155.27 × 55,141.02
  4. Step 4: Simplify right side
    83,432.70x = 6,349,779,046.18
  5. Step 5: Solve for x
    x = 6,349,779,046.18/83,432.70
  6. Step 6: Final answer
    x = 76,106.60

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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.