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Finding the Fourth Proportional to 78,425.67, 108,218.64 and 44,426.88

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Solution

The fourth proportional to 78,425.67, 108,218.64 and 44,426.88 is: 61,304.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425.67 : 108,218.64 = 44,426.88 : x
  2. Step 2: Convert to fraction form
    78,425.67/108,218.64 = 44,426.88/x
  3. Step 3: Cross multiply
    78,425.67x = 108,218.64 × 44,426.88
  4. Step 4: Simplify right side
    78,425.67x = 4,807,816,639.84
  5. Step 5: Solve for x
    x = 4,807,816,639.84/78,425.67
  6. Step 6: Final answer
    x = 61,304.12

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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.