Home / 72,740.17-100,366.38-42,519.64

Finding the Fourth Proportional to 72,740.17, 100,366.38 and 42,519.64

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Solution

The fourth proportional to 72,740.17, 100,366.38 and 42,519.64 is: 58,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.17 : 100,366.38 = 42,519.64 : x
  2. Step 2: Convert to fraction form
    72,740.17/100,366.38 = 42,519.64/x
  3. Step 3: Cross multiply
    72,740.17x = 100,366.38 × 42,519.64
  4. Step 4: Simplify right side
    72,740.17x = 4,267,542,659.35
  5. Step 5: Solve for x
    x = 4,267,542,659.35/72,740.17
  6. Step 6: Final answer
    x = 58,668.31

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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.