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Finding the Fourth Proportional to 53,955.90, 80,957.20 and 28,966.80

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Solution

The fourth proportional to 53,955.90, 80,957.20 and 28,966.80 is: 43,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,955.90 : 80,957.20 = 28,966.80 : x
  2. Step 2: Convert to fraction form
    53,955.90/80,957.20 = 28,966.80/x
  3. Step 3: Cross multiply
    53,955.90x = 80,957.20 × 28,966.80
  4. Step 4: Simplify right side
    53,955.90x = 2,345,071,020.96
  5. Step 5: Solve for x
    x = 2,345,071,020.96/53,955.90
  6. Step 6: Final answer
    x = 43,462.74

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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.