Home / 77,089.02-115,641.30-20,930.04

Finding the Fourth Proportional to 77,089.02, 115,641.30 and 20,930.04

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Solution

The fourth proportional to 77,089.02, 115,641.30 and 20,930.04 is: 31,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,089.02 : 115,641.30 = 20,930.04 : x
  2. Step 2: Convert to fraction form
    77,089.02/115,641.30 = 20,930.04/x
  3. Step 3: Cross multiply
    77,089.02x = 115,641.30 × 20,930.04
  4. Step 4: Simplify right side
    77,089.02x = 2,420,377,034.65
  5. Step 5: Solve for x
    x = 2,420,377,034.65/77,089.02
  6. Step 6: Final answer
    x = 31,397.17

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1.5x scale

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.