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Finding the Fourth Proportional to 88,102.50, 121,535.51 and 54,118.64

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Solution

The fourth proportional to 88,102.50, 121,535.51 and 54,118.64 is: 74,655.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,102.50 : 121,535.51 = 54,118.64 : x
  2. Step 2: Convert to fraction form
    88,102.50/121,535.51 = 54,118.64/x
  3. Step 3: Cross multiply
    88,102.50x = 121,535.51 × 54,118.64
  4. Step 4: Simplify right side
    88,102.50x = 6,577,336,546.15
  5. Step 5: Solve for x
    x = 6,577,336,546.15/88,102.50
  6. Step 6: Final answer
    x = 74,655.50

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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.