Home / 81,232.13-112,128.57-55,822.64

Finding the Fourth Proportional to 81,232.13, 112,128.57 and 55,822.64

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Solution

The fourth proportional to 81,232.13, 112,128.57 and 55,822.64 is: 77,054.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.13 : 112,128.57 = 55,822.64 : x
  2. Step 2: Convert to fraction form
    81,232.13/112,128.57 = 55,822.64/x
  3. Step 3: Cross multiply
    81,232.13x = 112,128.57 × 55,822.64
  4. Step 4: Simplify right side
    81,232.13x = 6,259,312,236.18
  5. Step 5: Solve for x
    x = 6,259,312,236.18/81,232.13
  6. Step 6: Final answer
    x = 77,054.63

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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.