Home / 87,916.61-121,324.95-47,630.65

Finding the Fourth Proportional to 87,916.61, 121,324.95 and 47,630.65

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Solution

The fourth proportional to 87,916.61, 121,324.95 and 47,630.65 is: 65,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,916.61 : 121,324.95 = 47,630.65 : x
  2. Step 2: Convert to fraction form
    87,916.61/121,324.95 = 47,630.65/x
  3. Step 3: Cross multiply
    87,916.61x = 121,324.95 × 47,630.65
  4. Step 4: Simplify right side
    87,916.61x = 5,778,786,229.72
  5. Step 5: Solve for x
    x = 5,778,786,229.72/87,916.61
  6. Step 6: Final answer
    x = 65,730.31

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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.