Home / 78,437.59-108,204.02-51,229.61

Finding the Fourth Proportional to 78,437.59, 108,204.02 and 51,229.61

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Solution

The fourth proportional to 78,437.59, 108,204.02 and 51,229.61 is: 70,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,437.59 : 108,204.02 = 51,229.61 : x
  2. Step 2: Convert to fraction form
    78,437.59/108,204.02 = 51,229.61/x
  3. Step 3: Cross multiply
    78,437.59x = 108,204.02 × 51,229.61
  4. Step 4: Simplify right side
    78,437.59x = 5,543,250,197.03
  5. Step 5: Solve for x
    x = 5,543,250,197.03/78,437.59
  6. Step 6: Final answer
    x = 70,670.84

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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.