Home / 81,115.96-111,938.86-45,306.49

Finding the Fourth Proportional to 81,115.96, 111,938.86 and 45,306.49

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Solution

The fourth proportional to 81,115.96, 111,938.86 and 45,306.49 is: 62,522.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,115.96 : 111,938.86 = 45,306.49 : x
  2. Step 2: Convert to fraction form
    81,115.96/111,938.86 = 45,306.49/x
  3. Step 3: Cross multiply
    81,115.96x = 111,938.86 × 45,306.49
  4. Step 4: Simplify right side
    81,115.96x = 5,071,556,841.20
  5. Step 5: Solve for x
    x = 5,071,556,841.20/81,115.96
  6. Step 6: Final answer
    x = 62,522.31

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1.5x scale

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.