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Finding the Fourth Proportional to 108,274.08, 162,300.48 and 61,428

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Solution

The fourth proportional to 108,274.08, 162,300.48 and 61,428 is: 92,079.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,274.08 : 162,300.48 = 61,428 : x
  2. Step 2: Convert to fraction form
    108,274.08/162,300.48 = 61,428/x
  3. Step 3: Cross multiply
    108,274.08x = 162,300.48 × 61,428
  4. Step 4: Simplify right side
    108,274.08x = 9,969,793,885.44
  5. Step 5: Solve for x
    x = 9,969,793,885.44/108,274.08
  6. Step 6: Final answer
    x = 92,079.23

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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.