Home / 78,961.74-109,082.45-68,332.92

Finding the Fourth Proportional to 78,961.74, 109,082.45 and 68,332.92

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Solution

The fourth proportional to 78,961.74, 109,082.45 and 68,332.92 is: 94,399.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.74 : 109,082.45 = 68,332.92 : x
  2. Step 2: Convert to fraction form
    78,961.74/109,082.45 = 68,332.92/x
  3. Step 3: Cross multiply
    78,961.74x = 109,082.45 × 68,332.92
  4. Step 4: Simplify right side
    78,961.74x = 7,453,921,987.59
  5. Step 5: Solve for x
    x = 7,453,921,987.59/78,961.74
  6. Step 6: Final answer
    x = 94,399.16

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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.