Home / 78,865,417.28-118,192,382.91-61,379,089.49

Finding the Fourth Proportional to 78,865,417.28, 118,192,382.91 and 61,379,089.49

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Solution

The fourth proportional to 78,865,417.28, 118,192,382.91 and 61,379,089.49 is: 91,986,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,417.28 : 118,192,382.91 = 61,379,089.49 : x
  2. Step 2: Convert to fraction form
    78,865,417.28/118,192,382.91 = 61,379,089.49/x
  3. Step 3: Cross multiply
    78,865,417.28x = 118,192,382.91 × 61,379,089.49
  4. Step 4: Simplify right side
    78,865,417.28x = 7,254,540,847,964,717
  5. Step 5: Solve for x
    x = 7,254,540,847,964,717/78,865,417.28
  6. Step 6: Final answer
    x = 91,986,336.95

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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.