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Finding the Fourth Proportional to 61,646.30, 92,479.82 and 19,538.12

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Solution

The fourth proportional to 61,646.30, 92,479.82 and 19,538.12 is: 29,310.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,646.30 : 92,479.82 = 19,538.12 : x
  2. Step 2: Convert to fraction form
    61,646.30/92,479.82 = 19,538.12/x
  3. Step 3: Cross multiply
    61,646.30x = 92,479.82 × 19,538.12
  4. Step 4: Simplify right side
    61,646.30x = 1,806,881,820.74
  5. Step 5: Solve for x
    x = 1,806,881,820.74/61,646.30
  6. Step 6: Final answer
    x = 29,310.47

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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.