Home / 81,084.04-111,972.96-76,666.30

Finding the Fourth Proportional to 81,084.04, 111,972.96 and 76,666.30

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Solution

The fourth proportional to 81,084.04, 111,972.96 and 76,666.30 is: 105,872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,084.04 : 111,972.96 = 76,666.30 : x
  2. Step 2: Convert to fraction form
    81,084.04/111,972.96 = 76,666.30/x
  3. Step 3: Cross multiply
    81,084.04x = 111,972.96 × 76,666.30
  4. Step 4: Simplify right side
    81,084.04x = 8,584,552,543.25
  5. Step 5: Solve for x
    x = 8,584,552,543.25/81,084.04
  6. Step 6: Final answer
    x = 105,872.28

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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.