Home / 81,947,809.20-122,921,713.80-21,363,535.20

Finding the Fourth Proportional to 81,947,809.20, 122,921,713.80 and 21,363,535.20

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Solution

The fourth proportional to 81,947,809.20, 122,921,713.80 and 21,363,535.20 is: 32,045,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,947,809.20 : 122,921,713.80 = 21,363,535.20 : x
  2. Step 2: Convert to fraction form
    81,947,809.20/122,921,713.80 = 21,363,535.20/x
  3. Step 3: Cross multiply
    81,947,809.20x = 122,921,713.80 × 21,363,535.20
  4. Step 4: Simplify right side
    81,947,809.20x = 2,626,042,359,610,625.50
  5. Step 5: Solve for x
    x = 2,626,042,359,610,625.50/81,947,809.20
  6. Step 6: Final answer
    x = 32,045,302.80

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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.