Home / 84,042.80-125,891.40-57,777.20

Finding the Fourth Proportional to 84,042.80, 125,891.40 and 57,777.20

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Solution

The fourth proportional to 84,042.80, 125,891.40 and 57,777.20 is: 86,547.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,042.80 : 125,891.40 = 57,777.20 : x
  2. Step 2: Convert to fraction form
    84,042.80/125,891.40 = 57,777.20/x
  3. Step 3: Cross multiply
    84,042.80x = 125,891.40 × 57,777.20
  4. Step 4: Simplify right side
    84,042.80x = 7,273,652,596.08
  5. Step 5: Solve for x
    x = 7,273,652,596.08/84,042.80
  6. Step 6: Final answer
    x = 86,547.00

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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.