Home / 80,951.10-121,374.09-38,830.20

Finding the Fourth Proportional to 80,951.10, 121,374.09 and 38,830.20

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Solution

The fourth proportional to 80,951.10, 121,374.09 and 38,830.20 is: 58,220.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.10 : 121,374.09 = 38,830.20 : x
  2. Step 2: Convert to fraction form
    80,951.10/121,374.09 = 38,830.20/x
  3. Step 3: Cross multiply
    80,951.10x = 121,374.09 × 38,830.20
  4. Step 4: Simplify right side
    80,951.10x = 4,712,980,189.52
  5. Step 5: Solve for x
    x = 4,712,980,189.52/80,951.10
  6. Step 6: Final answer
    x = 58,220.09

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1.5x scale

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.