Home / 78,515,868.61-108,352,700.52-43,236,954.38

Finding the Fourth Proportional to 78,515,868.61, 108,352,700.52 and 43,236,954.38

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Solution

The fourth proportional to 78,515,868.61, 108,352,700.52 and 43,236,954.38 is: 59,667,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,515,868.61 : 108,352,700.52 = 43,236,954.38 : x
  2. Step 2: Convert to fraction form
    78,515,868.61/108,352,700.52 = 43,236,954.38/x
  3. Step 3: Cross multiply
    78,515,868.61x = 108,352,700.52 × 43,236,954.38
  4. Step 4: Simplify right side
    78,515,868.61x = 4,684,840,769,333,042
  5. Step 5: Solve for x
    x = 4,684,840,769,333,042/78,515,868.61
  6. Step 6: Final answer
    x = 59,667,438.60

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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.