Home / 87,898.04-121,219.55-57,671.87

Finding the Fourth Proportional to 87,898.04, 121,219.55 and 57,671.87

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Solution

The fourth proportional to 87,898.04, 121,219.55 and 57,671.87 is: 79,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,898.04 : 121,219.55 = 57,671.87 : x
  2. Step 2: Convert to fraction form
    87,898.04/121,219.55 = 57,671.87/x
  3. Step 3: Cross multiply
    87,898.04x = 121,219.55 × 57,671.87
  4. Step 4: Simplify right side
    87,898.04x = 6,990,958,129.06
  5. Step 5: Solve for x
    x = 6,990,958,129.06/87,898.04
  6. Step 6: Final answer
    x = 79,534.86

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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.