Home / 76,287.70-105,283.26-42,306.86

Finding the Fourth Proportional to 76,287.70, 105,283.26 and 42,306.86

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Solution

The fourth proportional to 76,287.70, 105,283.26 and 42,306.86 is: 58,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,287.70 : 105,283.26 = 42,306.86 : x
  2. Step 2: Convert to fraction form
    76,287.70/105,283.26 = 42,306.86/x
  3. Step 3: Cross multiply
    76,287.70x = 105,283.26 × 42,306.86
  4. Step 4: Simplify right side
    76,287.70x = 4,454,204,141.16
  5. Step 5: Solve for x
    x = 4,454,204,141.16/76,287.70
  6. Step 6: Final answer
    x = 58,386.92

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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.