Home / 75,128.34-112,749.65-27,788.22

Finding the Fourth Proportional to 75,128.34, 112,749.65 and 27,788.22

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Solution

The fourth proportional to 75,128.34, 112,749.65 and 27,788.22 is: 41,703.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.34 : 112,749.65 = 27,788.22 : x
  2. Step 2: Convert to fraction form
    75,128.34/112,749.65 = 27,788.22/x
  3. Step 3: Cross multiply
    75,128.34x = 112,749.65 × 27,788.22
  4. Step 4: Simplify right side
    75,128.34x = 3,133,112,079.12
  5. Step 5: Solve for x
    x = 3,133,112,079.12/75,128.34
  6. Step 6: Final answer
    x = 41,703.46

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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.