Home / 83,638.46-115,421.18-45,398.01

Finding the Fourth Proportional to 83,638.46, 115,421.18 and 45,398.01

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Solution

The fourth proportional to 83,638.46, 115,421.18 and 45,398.01 is: 62,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,638.46 : 115,421.18 = 45,398.01 : x
  2. Step 2: Convert to fraction form
    83,638.46/115,421.18 = 45,398.01/x
  3. Step 3: Cross multiply
    83,638.46x = 115,421.18 × 45,398.01
  4. Step 4: Simplify right side
    83,638.46x = 5,239,891,883.85
  5. Step 5: Solve for x
    x = 5,239,891,883.85/83,638.46
  6. Step 6: Final answer
    x = 62,649.31

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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.