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Finding the Fourth Proportional to 87,859.64, 121,247.12 and 47,574.25

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Solution

The fourth proportional to 87,859.64, 121,247.12 and 47,574.25 is: 65,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859.64 : 121,247.12 = 47,574.25 : x
  2. Step 2: Convert to fraction form
    87,859.64/121,247.12 = 47,574.25/x
  3. Step 3: Cross multiply
    87,859.64x = 121,247.12 × 47,574.25
  4. Step 4: Simplify right side
    87,859.64x = 5,768,239,954.55
  5. Step 5: Solve for x
    x = 5,768,239,954.55/87,859.64
  6. Step 6: Final answer
    x = 65,652.90

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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.