Home / 61,890.16-85,402.52-49,174.13

Finding the Fourth Proportional to 61,890.16, 85,402.52 and 49,174.13

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Solution

The fourth proportional to 61,890.16, 85,402.52 and 49,174.13 is: 67,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.16 : 85,402.52 = 49,174.13 : x
  2. Step 2: Convert to fraction form
    61,890.16/85,402.52 = 49,174.13/x
  3. Step 3: Cross multiply
    61,890.16x = 85,402.52 × 49,174.13
  4. Step 4: Simplify right side
    61,890.16x = 4,199,594,276.09
  5. Step 5: Solve for x
    x = 4,199,594,276.09/61,890.16
  6. Step 6: Final answer
    x = 67,855.60

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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.