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Finding the Fourth Proportional to 53,955.90, 80,957.20 and 28,966.79

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Solution

The fourth proportional to 53,955.90, 80,957.20 and 28,966.79 is: 43,462.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,955.90 : 80,957.20 = 28,966.79 : x
  2. Step 2: Convert to fraction form
    53,955.90/80,957.20 = 28,966.79/x
  3. Step 3: Cross multiply
    53,955.90x = 80,957.20 × 28,966.79
  4. Step 4: Simplify right side
    53,955.90x = 2,345,070,211.39
  5. Step 5: Solve for x
    x = 2,345,070,211.39/53,955.90
  6. Step 6: Final answer
    x = 43,462.72

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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.