Home / 81,979.04-122,880.96-58,534.40

Finding the Fourth Proportional to 81,979.04, 122,880.96 and 58,534.40

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Solution

The fourth proportional to 81,979.04, 122,880.96 and 58,534.40 is: 87,739.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,979.04 : 122,880.96 = 58,534.40 : x
  2. Step 2: Convert to fraction form
    81,979.04/122,880.96 = 58,534.40/x
  3. Step 3: Cross multiply
    81,979.04x = 122,880.96 × 58,534.40
  4. Step 4: Simplify right side
    81,979.04x = 7,192,763,265.02
  5. Step 5: Solve for x
    x = 7,192,763,265.02/81,979.04
  6. Step 6: Final answer
    x = 87,739.05

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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.