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Finding the Fourth Proportional to 84,987.29, 127,986.87 and 74,026.37

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Solution

The fourth proportional to 84,987.29, 127,986.87 and 74,026.37 is: 111,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,987.29 : 127,986.87 = 74,026.37 : x
  2. Step 2: Convert to fraction form
    84,987.29/127,986.87 = 74,026.37/x
  3. Step 3: Cross multiply
    84,987.29x = 127,986.87 × 74,026.37
  4. Step 4: Simplify right side
    84,987.29x = 9,474,403,393.76
  5. Step 5: Solve for x
    x = 9,474,403,393.76/84,987.29
  6. Step 6: Final answer
    x = 111,480.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.