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Finding the Fourth Proportional to 88,191.30, 121,655.52 and 55,866.72

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Solution

The fourth proportional to 88,191.30, 121,655.52 and 55,866.72 is: 77,065.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,191.30 : 121,655.52 = 55,866.72 : x
  2. Step 2: Convert to fraction form
    88,191.30/121,655.52 = 55,866.72/x
  3. Step 3: Cross multiply
    88,191.30x = 121,655.52 × 55,866.72
  4. Step 4: Simplify right side
    88,191.30x = 6,796,494,872.29
  5. Step 5: Solve for x
    x = 6,796,494,872.29/88,191.30
  6. Step 6: Final answer
    x = 77,065.37

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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.