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Finding the Fourth Proportional to 61,368.66, 91,941.74 and 28,116.54

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Solution

The fourth proportional to 61,368.66, 91,941.74 and 28,116.54 is: 42,123.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,368.66 : 91,941.74 = 28,116.54 : x
  2. Step 2: Convert to fraction form
    61,368.66/91,941.74 = 28,116.54/x
  3. Step 3: Cross multiply
    61,368.66x = 91,941.74 × 28,116.54
  4. Step 4: Simplify right side
    61,368.66x = 2,585,083,610.38
  5. Step 5: Solve for x
    x = 2,585,083,610.38/61,368.66
  6. Step 6: Final answer
    x = 42,123.84

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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.