Home / 61,418.10-91,908.45-42,609.90

Finding the Fourth Proportional to 61,418.10, 91,908.45 and 42,609.90

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Solution

The fourth proportional to 61,418.10, 91,908.45 and 42,609.90 is: 63,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,418.10 : 91,908.45 = 42,609.90 : x
  2. Step 2: Convert to fraction form
    61,418.10/91,908.45 = 42,609.90/x
  3. Step 3: Cross multiply
    61,418.10x = 91,908.45 × 42,609.90
  4. Step 4: Simplify right side
    61,418.10x = 3,916,209,863.66
  5. Step 5: Solve for x
    x = 3,916,209,863.66/61,418.10
  6. Step 6: Final answer
    x = 63,763.12

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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.