Home / 81,034.90-121,552.35-51,291.70

Finding the Fourth Proportional to 81,034.90, 121,552.35 and 51,291.70

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Solution

The fourth proportional to 81,034.90, 121,552.35 and 51,291.70 is: 76,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,034.90 : 121,552.35 = 51,291.70 : x
  2. Step 2: Convert to fraction form
    81,034.90/121,552.35 = 51,291.70/x
  3. Step 3: Cross multiply
    81,034.90x = 121,552.35 × 51,291.70
  4. Step 4: Simplify right side
    81,034.90x = 6,234,626,670.50
  5. Step 5: Solve for x
    x = 6,234,626,670.50/81,034.90
  6. Step 6: Final answer
    x = 76,937.55

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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.