Home / 87,973.32-121,402.74-47,686.92

Finding the Fourth Proportional to 87,973.32, 121,402.74 and 47,686.92

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Solution

The fourth proportional to 87,973.32, 121,402.74 and 47,686.92 is: 65,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973.32 : 121,402.74 = 47,686.92 : x
  2. Step 2: Convert to fraction form
    87,973.32/121,402.74 = 47,686.92/x
  3. Step 3: Cross multiply
    87,973.32x = 121,402.74 × 47,686.92
  4. Step 4: Simplify right side
    87,973.32x = 5,789,322,750.16
  5. Step 5: Solve for x
    x = 5,789,322,750.16/87,973.32
  6. Step 6: Final answer
    x = 65,807.71

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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.