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Finding the Fourth Proportional to 61,860.96, 92,746 and 19,716.80

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Solution

The fourth proportional to 61,860.96, 92,746 and 19,716.80 is: 29,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,860.96 : 92,746 = 19,716.80 : x
  2. Step 2: Convert to fraction form
    61,860.96/92,746 = 19,716.80/x
  3. Step 3: Cross multiply
    61,860.96x = 92,746 × 19,716.80
  4. Step 4: Simplify right side
    61,860.96x = 1,828,654,332.80
  5. Step 5: Solve for x
    x = 1,828,654,332.80/61,860.96
  6. Step 6: Final answer
    x = 29,560.72

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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.