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Finding the Fourth Proportional to 69,938.47, 104,908.45 and 55,987.20

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Solution

The fourth proportional to 69,938.47, 104,908.45 and 55,987.20 is: 83,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,938.47 : 104,908.45 = 55,987.20 : x
  2. Step 2: Convert to fraction form
    69,938.47/104,908.45 = 55,987.20/x
  3. Step 3: Cross multiply
    69,938.47x = 104,908.45 × 55,987.20
  4. Step 4: Simplify right side
    69,938.47x = 5,873,530,371.84
  5. Step 5: Solve for x
    x = 5,873,530,371.84/69,938.47
  6. Step 6: Final answer
    x = 83,981.40

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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.