Home / 76,287.28-105,282.65-42,306.41

Finding the Fourth Proportional to 76,287.28, 105,282.65 and 42,306.41

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Solution

The fourth proportional to 76,287.28, 105,282.65 and 42,306.41 is: 58,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,287.28 : 105,282.65 = 42,306.41 : x
  2. Step 2: Convert to fraction form
    76,287.28/105,282.65 = 42,306.41/x
  3. Step 3: Cross multiply
    76,287.28x = 105,282.65 × 42,306.41
  4. Step 4: Simplify right side
    76,287.28x = 4,454,131,325.76
  5. Step 5: Solve for x
    x = 4,454,131,325.76/76,287.28
  6. Step 6: Final answer
    x = 58,386.29

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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.