Home / 91,875.20-137,780.40-41,979.20

Finding the Fourth Proportional to 91,875.20, 137,780.40 and 41,979.20

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Solution

The fourth proportional to 91,875.20, 137,780.40 and 41,979.20 is: 62,954.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,875.20 : 137,780.40 = 41,979.20 : x
  2. Step 2: Convert to fraction form
    91,875.20/137,780.40 = 41,979.20/x
  3. Step 3: Cross multiply
    91,875.20x = 137,780.40 × 41,979.20
  4. Step 4: Simplify right side
    91,875.20x = 5,783,910,967.68
  5. Step 5: Solve for x
    x = 5,783,910,967.68/91,875.20
  6. Step 6: Final answer
    x = 62,954.00

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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.