Home / 81,287.77-112,215.48-61,152.33

Finding the Fourth Proportional to 81,287.77, 112,215.48 and 61,152.33

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Solution

The fourth proportional to 81,287.77, 112,215.48 and 61,152.33 is: 84,419.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,287.77 : 112,215.48 = 61,152.33 : x
  2. Step 2: Convert to fraction form
    81,287.77/112,215.48 = 61,152.33/x
  3. Step 3: Cross multiply
    81,287.77x = 112,215.48 × 61,152.33
  4. Step 4: Simplify right side
    81,287.77x = 6,862,238,255.56
  5. Step 5: Solve for x
    x = 6,862,238,255.56/81,287.77
  6. Step 6: Final answer
    x = 84,419.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.