Home / 87,765.64-121,117.18-53,774.20

Finding the Fourth Proportional to 87,765.64, 121,117.18 and 53,774.20

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Solution

The fourth proportional to 87,765.64, 121,117.18 and 53,774.20 is: 74,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,765.64 : 121,117.18 = 53,774.20 : x
  2. Step 2: Convert to fraction form
    87,765.64/121,117.18 = 53,774.20/x
  3. Step 3: Cross multiply
    87,765.64x = 121,117.18 × 53,774.20
  4. Step 4: Simplify right side
    87,765.64x = 6,512,979,460.76
  5. Step 5: Solve for x
    x = 6,512,979,460.76/87,765.64
  6. Step 6: Final answer
    x = 74,208.76

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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.