Home / 82,445.07-113,831.82-72,811.20

Finding the Fourth Proportional to 82,445.07, 113,831.82 and 72,811.20

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Solution

The fourth proportional to 82,445.07, 113,831.82 and 72,811.20 is: 100,530.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,445.07 : 113,831.82 = 72,811.20 : x
  2. Step 2: Convert to fraction form
    82,445.07/113,831.82 = 72,811.20/x
  3. Step 3: Cross multiply
    82,445.07x = 113,831.82 × 72,811.20
  4. Step 4: Simplify right side
    82,445.07x = 8,288,231,412.38
  5. Step 5: Solve for x
    x = 8,288,231,412.38/82,445.07
  6. Step 6: Final answer
    x = 100,530.35

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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.