Home / 86,423.30-129,634.95-53,974.70

Finding the Fourth Proportional to 86,423.30, 129,634.95 and 53,974.70

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Solution

The fourth proportional to 86,423.30, 129,634.95 and 53,974.70 is: 80,962.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,423.30 : 129,634.95 = 53,974.70 : x
  2. Step 2: Convert to fraction form
    86,423.30/129,634.95 = 53,974.70/x
  3. Step 3: Cross multiply
    86,423.30x = 129,634.95 × 53,974.70
  4. Step 4: Simplify right side
    86,423.30x = 6,997,007,535.77
  5. Step 5: Solve for x
    x = 6,997,007,535.77/86,423.30
  6. Step 6: Final answer
    x = 80,962.05

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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.