Home / 80,390,001.40-120,585,002.10-49,778,999.80

Finding the Fourth Proportional to 80,390,001.40, 120,585,002.10 and 49,778,999.80

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Solution

The fourth proportional to 80,390,001.40, 120,585,002.10 and 49,778,999.80 is: 74,668,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,390,001.40 : 120,585,002.10 = 49,778,999.80 : x
  2. Step 2: Convert to fraction form
    80,390,001.40/120,585,002.10 = 49,778,999.80/x
  3. Step 3: Cross multiply
    80,390,001.40x = 120,585,002.10 × 49,778,999.80
  4. Step 4: Simplify right side
    80,390,001.40x = 6,002,600,795,418,899
  5. Step 5: Solve for x
    x = 6,002,600,795,418,899/80,390,001.40
  6. Step 6: Final answer
    x = 74,668,499.70

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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.