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Finding the Fourth Proportional to 80,807.27, 121,045.66 and 65,867.63

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Solution

The fourth proportional to 80,807.27, 121,045.66 and 65,867.63 is: 98,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,807.27 : 121,045.66 = 65,867.63 : x
  2. Step 2: Convert to fraction form
    80,807.27/121,045.66 = 65,867.63/x
  3. Step 3: Cross multiply
    80,807.27x = 121,045.66 × 65,867.63
  4. Step 4: Simplify right side
    80,807.27x = 7,972,990,745.99
  5. Step 5: Solve for x
    x = 7,972,990,745.99/80,807.27
  6. Step 6: Final answer
    x = 98,666.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.