Home / 81,016.13-121,543.64-25,612.13

Finding the Fourth Proportional to 81,016.13, 121,543.64 and 25,612.13

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Solution

The fourth proportional to 81,016.13, 121,543.64 and 25,612.13 is: 38,424.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016.13 : 121,543.64 = 25,612.13 : x
  2. Step 2: Convert to fraction form
    81,016.13/121,543.64 = 25,612.13/x
  3. Step 3: Cross multiply
    81,016.13x = 121,543.64 × 25,612.13
  4. Step 4: Simplify right side
    81,016.13x = 3,112,991,508.35
  5. Step 5: Solve for x
    x = 3,112,991,508.35/81,016.13
  6. Step 6: Final answer
    x = 38,424.34

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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.