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Finding the Fourth Proportional to 78,700.80, 108,646.48 and 50,049.28

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Solution

The fourth proportional to 78,700.80, 108,646.48 and 50,049.28 is: 69,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,700.80 : 108,646.48 = 50,049.28 : x
  2. Step 2: Convert to fraction form
    78,700.80/108,646.48 = 50,049.28/x
  3. Step 3: Cross multiply
    78,700.80x = 108,646.48 × 50,049.28
  4. Step 4: Simplify right side
    78,700.80x = 5,437,678,098.53
  5. Step 5: Solve for x
    x = 5,437,678,098.53/78,700.80
  6. Step 6: Final answer
    x = 69,093.05

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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.