Home / 81,115.84-111,938.69-45,306.37

Finding the Fourth Proportional to 81,115.84, 111,938.69 and 45,306.37

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Solution

The fourth proportional to 81,115.84, 111,938.69 and 45,306.37 is: 62,522.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,115.84 : 111,938.69 = 45,306.37 : x
  2. Step 2: Convert to fraction form
    81,115.84/111,938.69 = 45,306.37/x
  3. Step 3: Cross multiply
    81,115.84x = 111,938.69 × 45,306.37
  4. Step 4: Simplify right side
    81,115.84x = 5,071,534,920.23
  5. Step 5: Solve for x
    x = 5,071,534,920.23/81,115.84
  6. Step 6: Final answer
    x = 62,522.13

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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.