Home / 81,705.38-112,753.48-45,895.40

Finding the Fourth Proportional to 81,705.38, 112,753.48 and 45,895.40

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Solution

The fourth proportional to 81,705.38, 112,753.48 and 45,895.40 is: 63,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,705.38 : 112,753.48 = 45,895.40 : x
  2. Step 2: Convert to fraction form
    81,705.38/112,753.48 = 45,895.40/x
  3. Step 3: Cross multiply
    81,705.38x = 112,753.48 × 45,895.40
  4. Step 4: Simplify right side
    81,705.38x = 5,174,866,065.99
  5. Step 5: Solve for x
    x = 5,174,866,065.99/81,705.38
  6. Step 6: Final answer
    x = 63,335.68

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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.