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Finding the Fourth Proportional to 83,730.36, 115,504.92 and 53,483.88

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Solution

The fourth proportional to 83,730.36, 115,504.92 and 53,483.88 is: 73,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,730.36 : 115,504.92 = 53,483.88 : x
  2. Step 2: Convert to fraction form
    83,730.36/115,504.92 = 53,483.88/x
  3. Step 3: Cross multiply
    83,730.36x = 115,504.92 × 53,483.88
  4. Step 4: Simplify right side
    83,730.36x = 6,177,651,280.69
  5. Step 5: Solve for x
    x = 6,177,651,280.69/83,730.36
  6. Step 6: Final answer
    x = 73,780.30

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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.