Home / 56,046.64-84,071.72-20,979.60

Finding the Fourth Proportional to 56,046.64, 84,071.72 and 20,979.60

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Solution

The fourth proportional to 56,046.64, 84,071.72 and 20,979.60 is: 31,470.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,046.64 : 84,071.72 = 20,979.60 : x
  2. Step 2: Convert to fraction form
    56,046.64/84,071.72 = 20,979.60/x
  3. Step 3: Cross multiply
    56,046.64x = 84,071.72 × 20,979.60
  4. Step 4: Simplify right side
    56,046.64x = 1,763,791,056.91
  5. Step 5: Solve for x
    x = 1,763,791,056.91/56,046.64
  6. Step 6: Final answer
    x = 31,470.06

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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.