Home / 83,640,687.40-125,461,031.10-74,313,897.85

Finding the Fourth Proportional to 83,640,687.40, 125,461,031.10 and 74,313,897.85

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Solution

The fourth proportional to 83,640,687.40, 125,461,031.10 and 74,313,897.85 is: 111,470,846.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640,687.40 : 125,461,031.10 = 74,313,897.85 : x
  2. Step 2: Convert to fraction form
    83,640,687.40/125,461,031.10 = 74,313,897.85/x
  3. Step 3: Cross multiply
    83,640,687.40x = 125,461,031.10 × 74,313,897.85
  4. Step 4: Simplify right side
    83,640,687.40x = 9,323,498,249,321,072
  5. Step 5: Solve for x
    x = 9,323,498,249,321,072/83,640,687.40
  6. Step 6: Final answer
    x = 111,470,846.78

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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.