Home / 83,143.12-124,710.92-30,548.76

Finding the Fourth Proportional to 83,143.12, 124,710.92 and 30,548.76

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Solution

The fourth proportional to 83,143.12, 124,710.92 and 30,548.76 is: 45,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,143.12 : 124,710.92 = 30,548.76 : x
  2. Step 2: Convert to fraction form
    83,143.12/124,710.92 = 30,548.76/x
  3. Step 3: Cross multiply
    83,143.12x = 124,710.92 × 30,548.76
  4. Step 4: Simplify right side
    83,143.12x = 3,809,763,964.46
  5. Step 5: Solve for x
    x = 3,809,763,964.46/83,143.12
  6. Step 6: Final answer
    x = 45,821.76

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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.