Home / 80,481,812.40-120,722,718.60-19,897,538.40

Finding the Fourth Proportional to 80,481,812.40, 120,722,718.60 and 19,897,538.40

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Solution

The fourth proportional to 80,481,812.40, 120,722,718.60 and 19,897,538.40 is: 29,846,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,481,812.40 : 120,722,718.60 = 19,897,538.40 : x
  2. Step 2: Convert to fraction form
    80,481,812.40/120,722,718.60 = 19,897,538.40/x
  3. Step 3: Cross multiply
    80,481,812.40x = 120,722,718.60 × 19,897,538.40
  4. Step 4: Simplify right side
    80,481,812.40x = 2,402,084,929,095,894
  5. Step 5: Solve for x
    x = 2,402,084,929,095,894/80,481,812.40
  6. Step 6: Final answer
    x = 29,846,307.60

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Similar ratio
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1.5x scale

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.