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Finding the Fourth Proportional to 55,209.60, 82,641.60 and 39,657.60

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Solution

The fourth proportional to 55,209.60, 82,641.60 and 39,657.60 is: 59,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,209.60 : 82,641.60 = 39,657.60 : x
  2. Step 2: Convert to fraction form
    55,209.60/82,641.60 = 39,657.60/x
  3. Step 3: Cross multiply
    55,209.60x = 82,641.60 × 39,657.60
  4. Step 4: Simplify right side
    55,209.60x = 3,277,367,516.16
  5. Step 5: Solve for x
    x = 3,277,367,516.16/55,209.60
  6. Step 6: Final answer
    x = 59,362.28

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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.