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Finding the Fourth Proportional to 75,133.78, 112,521.76 and 43,477.12

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Solution

The fourth proportional to 75,133.78, 112,521.76 and 43,477.12 is: 65,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,133.78 : 112,521.76 = 43,477.12 : x
  2. Step 2: Convert to fraction form
    75,133.78/112,521.76 = 43,477.12/x
  3. Step 3: Cross multiply
    75,133.78x = 112,521.76 × 43,477.12
  4. Step 4: Simplify right side
    75,133.78x = 4,892,122,062.13
  5. Step 5: Solve for x
    x = 4,892,122,062.13/75,133.78
  6. Step 6: Final answer
    x = 65,112.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.