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Finding the Fourth Proportional to 98,676.77, 148,031.12 and 38,672.72

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Solution

The fourth proportional to 98,676.77, 148,031.12 and 38,672.72 is: 58,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,676.77 : 148,031.12 = 38,672.72 : x
  2. Step 2: Convert to fraction form
    98,676.77/148,031.12 = 38,672.72/x
  3. Step 3: Cross multiply
    98,676.77x = 148,031.12 × 38,672.72
  4. Step 4: Simplify right side
    98,676.77x = 5,724,765,411.57
  5. Step 5: Solve for x
    x = 5,724,765,411.57/98,676.77
  6. Step 6: Final answer
    x = 58,015.33

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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.