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Finding the Fourth Proportional to 72,574.96, 108,331.88 and 67,232.80

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Solution

The fourth proportional to 72,574.96, 108,331.88 and 67,232.80 is: 100,357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,574.96 : 108,331.88 = 67,232.80 : x
  2. Step 2: Convert to fraction form
    72,574.96/108,331.88 = 67,232.80/x
  3. Step 3: Cross multiply
    72,574.96x = 108,331.88 × 67,232.80
  4. Step 4: Simplify right side
    72,574.96x = 7,283,455,621.66
  5. Step 5: Solve for x
    x = 7,283,455,621.66/72,574.96
  6. Step 6: Final answer
    x = 100,357.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.