Home / 80,390,002.40-120,585,003.60-49,779,000.80

Finding the Fourth Proportional to 80,390,002.40, 120,585,003.60 and 49,779,000.80

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Solution

The fourth proportional to 80,390,002.40, 120,585,003.60 and 49,779,000.80 is: 74,668,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,390,002.40 : 120,585,003.60 = 49,779,000.80 : x
  2. Step 2: Convert to fraction form
    80,390,002.40/120,585,003.60 = 49,779,000.80/x
  3. Step 3: Cross multiply
    80,390,002.40x = 120,585,003.60 × 49,779,000.80
  4. Step 4: Simplify right side
    80,390,002.40x = 6,002,600,990,672,402
  5. Step 5: Solve for x
    x = 6,002,600,990,672,402/80,390,002.40
  6. Step 6: Final answer
    x = 74,668,501.20

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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.