Home / 87,890.07-121,295.76-49,656.64

Finding the Fourth Proportional to 87,890.07, 121,295.76 and 49,656.64

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Solution

The fourth proportional to 87,890.07, 121,295.76 and 49,656.64 is: 68,530.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.07 : 121,295.76 = 49,656.64 : x
  2. Step 2: Convert to fraction form
    87,890.07/121,295.76 = 49,656.64/x
  3. Step 3: Cross multiply
    87,890.07x = 121,295.76 × 49,656.64
  4. Step 4: Simplify right side
    87,890.07x = 6,023,139,639.56
  5. Step 5: Solve for x
    x = 6,023,139,639.56/87,890.07
  6. Step 6: Final answer
    x = 68,530.38

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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.