Home / 75,288.78-103,890.06-43,468.20

Finding the Fourth Proportional to 75,288.78, 103,890.06 and 43,468.20

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Solution

The fourth proportional to 75,288.78, 103,890.06 and 43,468.20 is: 59,981.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,288.78 : 103,890.06 = 43,468.20 : x
  2. Step 2: Convert to fraction form
    75,288.78/103,890.06 = 43,468.20/x
  3. Step 3: Cross multiply
    75,288.78x = 103,890.06 × 43,468.20
  4. Step 4: Simplify right side
    75,288.78x = 4,515,913,906.09
  5. Step 5: Solve for x
    x = 4,515,913,906.09/75,288.78
  6. Step 6: Final answer
    x = 59,981.23

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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.