Home / 81,000.48-111,742.56-52,695.84

Finding the Fourth Proportional to 81,000.48, 111,742.56 and 52,695.84

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Solution

The fourth proportional to 81,000.48, 111,742.56 and 52,695.84 is: 72,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.48 : 111,742.56 = 52,695.84 : x
  2. Step 2: Convert to fraction form
    81,000.48/111,742.56 = 52,695.84/x
  3. Step 3: Cross multiply
    81,000.48x = 111,742.56 × 52,695.84
  4. Step 4: Simplify right side
    81,000.48x = 5,888,368,062.95
  5. Step 5: Solve for x
    x = 5,888,368,062.95/81,000.48
  6. Step 6: Final answer
    x = 72,695.47

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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.