Home / 78,129,247.48-117,182,463.41-22,782,209.72

Finding the Fourth Proportional to 78,129,247.48, 117,182,463.41 and 22,782,209.72

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Solution

The fourth proportional to 78,129,247.48, 117,182,463.41 and 22,782,209.72 is: 34,169,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129,247.48 : 117,182,463.41 = 22,782,209.72 : x
  2. Step 2: Convert to fraction form
    78,129,247.48/117,182,463.41 = 22,782,209.72/x
  3. Step 3: Cross multiply
    78,129,247.48x = 117,182,463.41 × 22,782,209.72
  4. Step 4: Simplify right side
    78,129,247.48x = 2,669,675,456,383,889.50
  5. Step 5: Solve for x
    x = 2,669,675,456,383,889.50/78,129,247.48
  6. Step 6: Final answer
    x = 34,169,988.10

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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.