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Finding the Fourth Proportional to 61,547.60, 92,321.42 and 19,431.95

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Solution

The fourth proportional to 61,547.60, 92,321.42 and 19,431.95 is: 29,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,547.60 : 92,321.42 = 19,431.95 : x
  2. Step 2: Convert to fraction form
    61,547.60/92,321.42 = 19,431.95/x
  3. Step 3: Cross multiply
    61,547.60x = 92,321.42 × 19,431.95
  4. Step 4: Simplify right side
    61,547.60x = 1,793,985,217.37
  5. Step 5: Solve for x
    x = 1,793,985,217.37/61,547.60
  6. Step 6: Final answer
    x = 29,147.93

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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.