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Finding the Fourth Proportional to 61,486.40, 92,312.52 and 39,343

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Solution

The fourth proportional to 61,486.40, 92,312.52 and 39,343 is: 59,067.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.40 : 92,312.52 = 39,343 : x
  2. Step 2: Convert to fraction form
    61,486.40/92,312.52 = 39,343/x
  3. Step 3: Cross multiply
    61,486.40x = 92,312.52 × 39,343
  4. Step 4: Simplify right side
    61,486.40x = 3,631,851,474.36
  5. Step 5: Solve for x
    x = 3,631,851,474.36/61,486.40
  6. Step 6: Final answer
    x = 59,067.56

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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.