Home / 99,687.60-137,573.28-57,259.44

Finding the Fourth Proportional to 99,687.60, 137,573.28 and 57,259.44

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Solution

The fourth proportional to 99,687.60, 137,573.28 and 57,259.44 is: 79,020.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,687.60 : 137,573.28 = 57,259.44 : x
  2. Step 2: Convert to fraction form
    99,687.60/137,573.28 = 57,259.44/x
  3. Step 3: Cross multiply
    99,687.60x = 137,573.28 × 57,259.44
  4. Step 4: Simplify right side
    99,687.60x = 7,877,368,971.76
  5. Step 5: Solve for x
    x = 7,877,368,971.76/99,687.60
  6. Step 6: Final answer
    x = 79,020.55

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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.