Home / 81,856,411.40-122,784,617.10-49,119,645.80

Finding the Fourth Proportional to 81,856,411.40, 122,784,617.10 and 49,119,645.80

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Solution

The fourth proportional to 81,856,411.40, 122,784,617.10 and 49,119,645.80 is: 73,679,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,856,411.40 : 122,784,617.10 = 49,119,645.80 : x
  2. Step 2: Convert to fraction form
    81,856,411.40/122,784,617.10 = 49,119,645.80/x
  3. Step 3: Cross multiply
    81,856,411.40x = 122,784,617.10 × 49,119,645.80
  4. Step 4: Simplify right side
    81,856,411.40x = 6,031,136,901,640,623
  5. Step 5: Solve for x
    x = 6,031,136,901,640,623/81,856,411.40
  6. Step 6: Final answer
    x = 73,679,468.70

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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.