Home / 69,002.20-103,430.40-39,356.20

Finding the Fourth Proportional to 69,002.20, 103,430.40 and 39,356.20

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Solution

The fourth proportional to 69,002.20, 103,430.40 and 39,356.20 is: 58,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,002.20 : 103,430.40 = 39,356.20 : x
  2. Step 2: Convert to fraction form
    69,002.20/103,430.40 = 39,356.20/x
  3. Step 3: Cross multiply
    69,002.20x = 103,430.40 × 39,356.20
  4. Step 4: Simplify right side
    69,002.20x = 4,070,627,508.48
  5. Step 5: Solve for x
    x = 4,070,627,508.48/69,002.20
  6. Step 6: Final answer
    x = 58,992.72

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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.