Home / 72,617.28-100,207.14-40,785.60

Finding the Fourth Proportional to 72,617.28, 100,207.14 and 40,785.60

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Solution

The fourth proportional to 72,617.28, 100,207.14 and 40,785.60 is: 56,281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,617.28 : 100,207.14 = 40,785.60 : x
  2. Step 2: Convert to fraction form
    72,617.28/100,207.14 = 40,785.60/x
  3. Step 3: Cross multiply
    72,617.28x = 100,207.14 × 40,785.60
  4. Step 4: Simplify right side
    72,617.28x = 4,087,008,329.18
  5. Step 5: Solve for x
    x = 4,087,008,329.18/72,617.28
  6. Step 6: Final answer
    x = 56,281.48

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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.