Home / 67,287,138.48-100,929,255.12-18,763,700.76

Finding the Fourth Proportional to 67,287,138.48, 100,929,255.12 and 18,763,700.76

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Solution

The fourth proportional to 67,287,138.48, 100,929,255.12 and 18,763,700.76 is: 28,145,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,287,138.48 : 100,929,255.12 = 18,763,700.76 : x
  2. Step 2: Convert to fraction form
    67,287,138.48/100,929,255.12 = 18,763,700.76/x
  3. Step 3: Cross multiply
    67,287,138.48x = 100,929,255.12 × 18,763,700.76
  4. Step 4: Simplify right side
    67,287,138.48x = 1,893,806,341,001,378.25
  5. Step 5: Solve for x
    x = 1,893,806,341,001,378.25/67,287,138.48
  6. Step 6: Final answer
    x = 28,145,146.07

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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.