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Finding the Fourth Proportional to 66,804.90, 92,192.25 and 38,123.99

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Solution

The fourth proportional to 66,804.90, 92,192.25 and 38,123.99 is: 52,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,804.90 : 92,192.25 = 38,123.99 : x
  2. Step 2: Convert to fraction form
    66,804.90/92,192.25 = 38,123.99/x
  3. Step 3: Cross multiply
    66,804.90x = 92,192.25 × 38,123.99
  4. Step 4: Simplify right side
    66,804.90x = 3,514,735,956.12
  5. Step 5: Solve for x
    x = 3,514,735,956.12/66,804.90
  6. Step 6: Final answer
    x = 52,611.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.