Home / 80,389,872.40-120,584,808.60-49,778,870.80

Finding the Fourth Proportional to 80,389,872.40, 120,584,808.60 and 49,778,870.80

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Solution

The fourth proportional to 80,389,872.40, 120,584,808.60 and 49,778,870.80 is: 74,668,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389,872.40 : 120,584,808.60 = 49,778,870.80 : x
  2. Step 2: Convert to fraction form
    80,389,872.40/120,584,808.60 = 49,778,870.80/x
  3. Step 3: Cross multiply
    80,389,872.40x = 120,584,808.60 × 49,778,870.80
  4. Step 4: Simplify right side
    80,389,872.40x = 6,002,575,607,742,128
  5. Step 5: Solve for x
    x = 6,002,575,607,742,128/80,389,872.40
  6. Step 6: Final answer
    x = 74,668,306.20

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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.