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Finding the Fourth Proportional to 72,384.80, 108,609.60 and 32,921.60

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Solution

The fourth proportional to 72,384.80, 108,609.60 and 32,921.60 is: 49,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,384.80 : 108,609.60 = 32,921.60 : x
  2. Step 2: Convert to fraction form
    72,384.80/108,609.60 = 32,921.60/x
  3. Step 3: Cross multiply
    72,384.80x = 108,609.60 × 32,921.60
  4. Step 4: Simplify right side
    72,384.80x = 3,575,601,807.36
  5. Step 5: Solve for x
    x = 3,575,601,807.36/72,384.80
  6. Step 6: Final answer
    x = 49,397.14

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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.