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Finding the Fourth Proportional to 70,260.87, 96,959.30 and 38,430.39

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Solution

The fourth proportional to 70,260.87, 96,959.30 and 38,430.39 is: 53,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,260.87 : 96,959.30 = 38,430.39 : x
  2. Step 2: Convert to fraction form
    70,260.87/96,959.30 = 38,430.39/x
  3. Step 3: Cross multiply
    70,260.87x = 96,959.30 × 38,430.39
  4. Step 4: Simplify right side
    70,260.87x = 3,726,183,520.98
  5. Step 5: Solve for x
    x = 3,726,183,520.98/70,260.87
  6. Step 6: Final answer
    x = 53,033.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.