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Finding the Fourth Proportional to 108,343.40, 162,483.36 and 40,826.72

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Solution

The fourth proportional to 108,343.40, 162,483.36 and 40,826.72 is: 61,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,343.40 : 162,483.36 = 40,826.72 : x
  2. Step 2: Convert to fraction form
    108,343.40/162,483.36 = 40,826.72/x
  3. Step 3: Cross multiply
    108,343.40x = 162,483.36 × 40,826.72
  4. Step 4: Simplify right side
    108,343.40x = 6,633,661,830.96
  5. Step 5: Solve for x
    x = 6,633,661,830.96/108,343.40
  6. Step 6: Final answer
    x = 61,228.11

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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.