Home / 72,971.28-109,456.92-56,355.55

Finding the Fourth Proportional to 72,971.28, 109,456.92 and 56,355.55

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Solution

The fourth proportional to 72,971.28, 109,456.92 and 56,355.55 is: 84,533.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,971.28 : 109,456.92 = 56,355.55 : x
  2. Step 2: Convert to fraction form
    72,971.28/109,456.92 = 56,355.55/x
  3. Step 3: Cross multiply
    72,971.28x = 109,456.92 × 56,355.55
  4. Step 4: Simplify right side
    72,971.28x = 6,168,504,654.26
  5. Step 5: Solve for x
    x = 6,168,504,654.26/72,971.28
  6. Step 6: Final answer
    x = 84,533.32

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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.