Home / 72,248.24-99,710.88-40,425.20

Finding the Fourth Proportional to 72,248.24, 99,710.88 and 40,425.20

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Solution

The fourth proportional to 72,248.24, 99,710.88 and 40,425.20 is: 55,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.24 : 99,710.88 = 40,425.20 : x
  2. Step 2: Convert to fraction form
    72,248.24/99,710.88 = 40,425.20/x
  3. Step 3: Cross multiply
    72,248.24x = 99,710.88 × 40,425.20
  4. Step 4: Simplify right side
    72,248.24x = 4,030,832,266.18
  5. Step 5: Solve for x
    x = 4,030,832,266.18/72,248.24
  6. Step 6: Final answer
    x = 55,791.43

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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.