Home / 83,750.45-125,626.58-21,420.95

Finding the Fourth Proportional to 83,750.45, 125,626.58 and 21,420.95

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Solution

The fourth proportional to 83,750.45, 125,626.58 and 21,420.95 is: 32,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,750.45 : 125,626.58 = 21,420.95 : x
  2. Step 2: Convert to fraction form
    83,750.45/125,626.58 = 21,420.95/x
  3. Step 3: Cross multiply
    83,750.45x = 125,626.58 × 21,420.95
  4. Step 4: Simplify right side
    83,750.45x = 2,691,039,953.61
  5. Step 5: Solve for x
    x = 2,691,039,953.61/83,750.45
  6. Step 6: Final answer
    x = 32,131.65

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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.