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Finding the Fourth Proportional to 83,400.80, 125,117.40 and 36,015.80

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Solution

The fourth proportional to 83,400.80, 125,117.40 and 36,015.80 is: 54,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,400.80 : 125,117.40 = 36,015.80 : x
  2. Step 2: Convert to fraction form
    83,400.80/125,117.40 = 36,015.80/x
  3. Step 3: Cross multiply
    83,400.80x = 125,117.40 × 36,015.80
  4. Step 4: Simplify right side
    83,400.80x = 4,506,203,254.92
  5. Step 5: Solve for x
    x = 4,506,203,254.92/83,400.80
  6. Step 6: Final answer
    x = 54,030.70

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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.