Home / 87,953.40-121,309.28-55,257.32

Finding the Fourth Proportional to 87,953.40, 121,309.28 and 55,257.32

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Solution

The fourth proportional to 87,953.40, 121,309.28 and 55,257.32 is: 76,213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,953.40 : 121,309.28 = 55,257.32 : x
  2. Step 2: Convert to fraction form
    87,953.40/121,309.28 = 55,257.32/x
  3. Step 3: Cross multiply
    87,953.40x = 121,309.28 × 55,257.32
  4. Step 4: Simplify right side
    87,953.40x = 6,703,225,703.93
  5. Step 5: Solve for x
    x = 6,703,225,703.93/87,953.40
  6. Step 6: Final answer
    x = 76,213.38

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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.