Home / 72,979.32-100,711.17-39,445.32

Finding the Fourth Proportional to 72,979.32, 100,711.17 and 39,445.32

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Solution

The fourth proportional to 72,979.32, 100,711.17 and 39,445.32 is: 54,434.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,979.32 : 100,711.17 = 39,445.32 : x
  2. Step 2: Convert to fraction form
    72,979.32/100,711.17 = 39,445.32/x
  3. Step 3: Cross multiply
    72,979.32x = 100,711.17 × 39,445.32
  4. Step 4: Simplify right side
    72,979.32x = 3,972,584,328.22
  5. Step 5: Solve for x
    x = 3,972,584,328.22/72,979.32
  6. Step 6: Final answer
    x = 54,434.38

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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.