Home / 81,368.06-112,340.13-55,866.20

Finding the Fourth Proportional to 81,368.06, 112,340.13 and 55,866.20

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Solution

The fourth proportional to 81,368.06, 112,340.13 and 55,866.20 is: 77,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.06 : 112,340.13 = 55,866.20 : x
  2. Step 2: Convert to fraction form
    81,368.06/112,340.13 = 55,866.20/x
  3. Step 3: Cross multiply
    81,368.06x = 112,340.13 × 55,866.20
  4. Step 4: Simplify right side
    81,368.06x = 6,276,016,170.61
  5. Step 5: Solve for x
    x = 6,276,016,170.61/81,368.06
  6. Step 6: Final answer
    x = 77,131.20

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1.5x scale

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.