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Finding the Fourth Proportional to 69,720.87, 96,215.37 and 37,889.76

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Solution

The fourth proportional to 69,720.87, 96,215.37 and 37,889.76 is: 52,288.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,720.87 : 96,215.37 = 37,889.76 : x
  2. Step 2: Convert to fraction form
    69,720.87/96,215.37 = 37,889.76/x
  3. Step 3: Cross multiply
    69,720.87x = 96,215.37 × 37,889.76
  4. Step 4: Simplify right side
    69,720.87x = 3,645,577,277.61
  5. Step 5: Solve for x
    x = 3,645,577,277.61/69,720.87
  6. Step 6: Final answer
    x = 52,288.18

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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.