Home / 81,360.56-112,272-45,059.36

Finding the Fourth Proportional to 81,360.56, 112,272 and 45,059.36

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Solution

The fourth proportional to 81,360.56, 112,272 and 45,059.36 is: 62,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,360.56 : 112,272 = 45,059.36 : x
  2. Step 2: Convert to fraction form
    81,360.56/112,272 = 45,059.36/x
  3. Step 3: Cross multiply
    81,360.56x = 112,272 × 45,059.36
  4. Step 4: Simplify right side
    81,360.56x = 5,058,904,465.92
  5. Step 5: Solve for x
    x = 5,058,904,465.92/81,360.56
  6. Step 6: Final answer
    x = 62,178.83

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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.