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Finding the Fourth Proportional to 55,854.75, 83,781.40 and 13,735.20

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Solution

The fourth proportional to 55,854.75, 83,781.40 and 13,735.20 is: 20,602.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,854.75 : 83,781.40 = 13,735.20 : x
  2. Step 2: Convert to fraction form
    55,854.75/83,781.40 = 13,735.20/x
  3. Step 3: Cross multiply
    55,854.75x = 83,781.40 × 13,735.20
  4. Step 4: Simplify right side
    55,854.75x = 1,150,754,285.28
  5. Step 5: Solve for x
    x = 1,150,754,285.28/55,854.75
  6. Step 6: Final answer
    x = 20,602.62

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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.