Home / 87,778.04-121,133.61-49,545.63

Finding the Fourth Proportional to 87,778.04, 121,133.61 and 49,545.63

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Solution

The fourth proportional to 87,778.04, 121,133.61 and 49,545.63 is: 68,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,778.04 : 121,133.61 = 49,545.63 : x
  2. Step 2: Convert to fraction form
    87,778.04/121,133.61 = 49,545.63/x
  3. Step 3: Cross multiply
    87,778.04x = 121,133.61 × 49,545.63
  4. Step 4: Simplify right side
    87,778.04x = 6,001,641,021.62
  5. Step 5: Solve for x
    x = 6,001,641,021.62/87,778.04
  6. Step 6: Final answer
    x = 68,372.93

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1.5x scale

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.