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Finding the Fourth Proportional to 81,341.42, 112,253.51 and 45,530.51

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Solution

The fourth proportional to 81,341.42, 112,253.51 and 45,530.51 is: 62,833.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,341.42 : 112,253.51 = 45,530.51 : x
  2. Step 2: Convert to fraction form
    81,341.42/112,253.51 = 45,530.51/x
  3. Step 3: Cross multiply
    81,341.42x = 112,253.51 × 45,530.51
  4. Step 4: Simplify right side
    81,341.42x = 5,110,959,112.15
  5. Step 5: Solve for x
    x = 5,110,959,112.15/81,341.42
  6. Step 6: Final answer
    x = 62,833.42

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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.