Home / 55,851.04-77,079.12-30,705.28

Finding the Fourth Proportional to 55,851.04, 77,079.12 and 30,705.28

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Solution

The fourth proportional to 55,851.04, 77,079.12 and 30,705.28 is: 42,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,851.04 : 77,079.12 = 30,705.28 : x
  2. Step 2: Convert to fraction form
    55,851.04/77,079.12 = 30,705.28/x
  3. Step 3: Cross multiply
    55,851.04x = 77,079.12 × 30,705.28
  4. Step 4: Simplify right side
    55,851.04x = 2,366,735,961.75
  5. Step 5: Solve for x
    x = 2,366,735,961.75/55,851.04
  6. Step 6: Final answer
    x = 42,375.86

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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.