Home / 87,038.80-120,104.04-51,240.04

Finding the Fourth Proportional to 87,038.80, 120,104.04 and 51,240.04

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Solution

The fourth proportional to 87,038.80, 120,104.04 and 51,240.04 is: 70,705.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,038.80 : 120,104.04 = 51,240.04 : x
  2. Step 2: Convert to fraction form
    87,038.80/120,104.04 = 51,240.04/x
  3. Step 3: Cross multiply
    87,038.80x = 120,104.04 × 51,240.04
  4. Step 4: Simplify right side
    87,038.80x = 6,154,135,813.76
  5. Step 5: Solve for x
    x = 6,154,135,813.76/87,038.80
  6. Step 6: Final answer
    x = 70,705.66

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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.