Home / 78,865,419.28-118,192,385.91-61,379,091.49

Finding the Fourth Proportional to 78,865,419.28, 118,192,385.91 and 61,379,091.49

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Solution

The fourth proportional to 78,865,419.28, 118,192,385.91 and 61,379,091.49 is: 91,986,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,419.28 : 118,192,385.91 = 61,379,091.49 : x
  2. Step 2: Convert to fraction form
    78,865,419.28/118,192,385.91 = 61,379,091.49/x
  3. Step 3: Cross multiply
    78,865,419.28x = 118,192,385.91 × 61,379,091.49
  4. Step 4: Simplify right side
    78,865,419.28x = 7,254,541,268,191,277
  5. Step 5: Solve for x
    x = 7,254,541,268,191,277/78,865,419.28
  6. Step 6: Final answer
    x = 91,986,339.95

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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.