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Finding the Fourth Proportional to 61,680.53, 85,124.08 and 49,038.05

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Solution

The fourth proportional to 61,680.53, 85,124.08 and 49,038.05 is: 67,676.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,680.53 : 85,124.08 = 49,038.05 : x
  2. Step 2: Convert to fraction form
    61,680.53/85,124.08 = 49,038.05/x
  3. Step 3: Cross multiply
    61,680.53x = 85,124.08 × 49,038.05
  4. Step 4: Simplify right side
    61,680.53x = 4,174,318,891.24
  5. Step 5: Solve for x
    x = 4,174,318,891.24/61,680.53
  6. Step 6: Final answer
    x = 67,676.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.