Home / 91,918.60-137,877.90-52,479.70

Finding the Fourth Proportional to 91,918.60, 137,877.90 and 52,479.70

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Solution

The fourth proportional to 91,918.60, 137,877.90 and 52,479.70 is: 78,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,918.60 : 137,877.90 = 52,479.70 : x
  2. Step 2: Convert to fraction form
    91,918.60/137,877.90 = 52,479.70/x
  3. Step 3: Cross multiply
    91,918.60x = 137,877.90 × 52,479.70
  4. Step 4: Simplify right side
    91,918.60x = 7,235,790,828.63
  5. Step 5: Solve for x
    x = 7,235,790,828.63/91,918.60
  6. Step 6: Final answer
    x = 78,719.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.