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Finding the Fourth Proportional to 83,453.51, 115,165.90 and 49,478.76

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Solution

The fourth proportional to 83,453.51, 115,165.90 and 49,478.76 is: 68,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,453.51 : 115,165.90 = 49,478.76 : x
  2. Step 2: Convert to fraction form
    83,453.51/115,165.90 = 49,478.76/x
  3. Step 3: Cross multiply
    83,453.51x = 115,165.90 × 49,478.76
  4. Step 4: Simplify right side
    83,453.51x = 5,698,265,926.28
  5. Step 5: Solve for x
    x = 5,698,265,926.28/83,453.51
  6. Step 6: Final answer
    x = 68,280.72

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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.