Home / 72,013.18-99,368.24-40,175.90

Finding the Fourth Proportional to 72,013.18, 99,368.24 and 40,175.90

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Solution

The fourth proportional to 72,013.18, 99,368.24 and 40,175.90 is: 55,437.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,013.18 : 99,368.24 = 40,175.90 : x
  2. Step 2: Convert to fraction form
    72,013.18/99,368.24 = 40,175.90/x
  3. Step 3: Cross multiply
    72,013.18x = 99,368.24 × 40,175.90
  4. Step 4: Simplify right side
    72,013.18x = 3,992,208,473.42
  5. Step 5: Solve for x
    x = 3,992,208,473.42/72,013.18
  6. Step 6: Final answer
    x = 55,437.19

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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.