Home / 72,421.17-99,950.40-42,207.90

Finding the Fourth Proportional to 72,421.17, 99,950.40 and 42,207.90

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Solution

The fourth proportional to 72,421.17, 99,950.40 and 42,207.90 is: 58,252.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.17 : 99,950.40 = 42,207.90 : x
  2. Step 2: Convert to fraction form
    72,421.17/99,950.40 = 42,207.90/x
  3. Step 3: Cross multiply
    72,421.17x = 99,950.40 × 42,207.90
  4. Step 4: Simplify right side
    72,421.17x = 4,218,696,488.16
  5. Step 5: Solve for x
    x = 4,218,696,488.16/72,421.17
  6. Step 6: Final answer
    x = 58,252.26

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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.