Home / 84,743.12-127,115.40-21,563.32

Finding the Fourth Proportional to 84,743.12, 127,115.40 and 21,563.32

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Solution

The fourth proportional to 84,743.12, 127,115.40 and 21,563.32 is: 32,345.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.12 : 127,115.40 = 21,563.32 : x
  2. Step 2: Convert to fraction form
    84,743.12/127,115.40 = 21,563.32/x
  3. Step 3: Cross multiply
    84,743.12x = 127,115.40 × 21,563.32
  4. Step 4: Simplify right side
    84,743.12x = 2,741,030,047.13
  5. Step 5: Solve for x
    x = 2,741,030,047.13/84,743.12
  6. Step 6: Final answer
    x = 32,345.16

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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.