Home / 72,206.40-108,275.42-42,229.31

Finding the Fourth Proportional to 72,206.40, 108,275.42 and 42,229.31

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Solution

The fourth proportional to 72,206.40, 108,275.42 and 42,229.31 is: 63,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.40 : 108,275.42 = 42,229.31 : x
  2. Step 2: Convert to fraction form
    72,206.40/108,275.42 = 42,229.31/x
  3. Step 3: Cross multiply
    72,206.40x = 108,275.42 × 42,229.31
  4. Step 4: Simplify right side
    72,206.40x = 4,572,395,907.74
  5. Step 5: Solve for x
    x = 4,572,395,907.74/72,206.40
  6. Step 6: Final answer
    x = 63,323.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.