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Finding the Fourth Proportional to 61,390.08, 92,085.12 and 40,608.72

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Solution

The fourth proportional to 61,390.08, 92,085.12 and 40,608.72 is: 60,913.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,390.08 : 92,085.12 = 40,608.72 : x
  2. Step 2: Convert to fraction form
    61,390.08/92,085.12 = 40,608.72/x
  3. Step 3: Cross multiply
    61,390.08x = 92,085.12 × 40,608.72
  4. Step 4: Simplify right side
    61,390.08x = 3,739,458,854.25
  5. Step 5: Solve for x
    x = 3,739,458,854.25/61,390.08
  6. Step 6: Final answer
    x = 60,913.08

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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.