Home / 87,817.50-121,155.08-57,619.49

Finding the Fourth Proportional to 87,817.50, 121,155.08 and 57,619.49

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Solution

The fourth proportional to 87,817.50, 121,155.08 and 57,619.49 is: 79,493.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,817.50 : 121,155.08 = 57,619.49 : x
  2. Step 2: Convert to fraction form
    87,817.50/121,155.08 = 57,619.49/x
  3. Step 3: Cross multiply
    87,817.50x = 121,155.08 × 57,619.49
  4. Step 4: Simplify right side
    87,817.50x = 6,980,893,026.64
  5. Step 5: Solve for x
    x = 6,980,893,026.64/87,817.50
  6. Step 6: Final answer
    x = 79,493.19

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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.