Home / 81,475,921.80-122,213,882.70-38,429,200.80

Finding the Fourth Proportional to 81,475,921.80, 122,213,882.70 and 38,429,200.80

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Solution

The fourth proportional to 81,475,921.80, 122,213,882.70 and 38,429,200.80 is: 57,643,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,475,921.80 : 122,213,882.70 = 38,429,200.80 : x
  2. Step 2: Convert to fraction form
    81,475,921.80/122,213,882.70 = 38,429,200.80/x
  3. Step 3: Cross multiply
    81,475,921.80x = 122,213,882.70 × 38,429,200.80
  4. Step 4: Simplify right side
    81,475,921.80x = 4,696,581,838,825,946
  5. Step 5: Solve for x
    x = 4,696,581,838,825,946/81,475,921.80
  6. Step 6: Final answer
    x = 57,643,801.20

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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.