Home / 81,747.80-112,815.30-45,937.70

Finding the Fourth Proportional to 81,747.80, 112,815.30 and 45,937.70

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Solution

The fourth proportional to 81,747.80, 112,815.30 and 45,937.70 is: 63,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,747.80 : 112,815.30 = 45,937.70 : x
  2. Step 2: Convert to fraction form
    81,747.80/112,815.30 = 45,937.70/x
  3. Step 3: Cross multiply
    81,747.80x = 112,815.30 × 45,937.70
  4. Step 4: Simplify right side
    81,747.80x = 5,182,475,406.81
  5. Step 5: Solve for x
    x = 5,182,475,406.81/81,747.80
  6. Step 6: Final answer
    x = 63,395.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.