Home / 78,755,721.80-118,098,153.30-30,217,443.80

Finding the Fourth Proportional to 78,755,721.80, 118,098,153.30 and 30,217,443.80

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Solution

The fourth proportional to 78,755,721.80, 118,098,153.30 and 30,217,443.80 is: 45,312,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,755,721.80 : 118,098,153.30 = 30,217,443.80 : x
  2. Step 2: Convert to fraction form
    78,755,721.80/118,098,153.30 = 30,217,443.80/x
  3. Step 3: Cross multiply
    78,755,721.80x = 118,098,153.30 × 30,217,443.80
  4. Step 4: Simplify right side
    78,755,721.80x = 3,568,624,310,226,534.50
  5. Step 5: Solve for x
    x = 3,568,624,310,226,534.50/78,755,721.80
  6. Step 6: Final answer
    x = 45,312,571.95

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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.