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Finding the Fourth Proportional to 66,846.38, 92,248.01 and 39,990.02

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Solution

The fourth proportional to 66,846.38, 92,248.01 and 39,990.02 is: 55,186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,846.38 : 92,248.01 = 39,990.02 : x
  2. Step 2: Convert to fraction form
    66,846.38/92,248.01 = 39,990.02/x
  3. Step 3: Cross multiply
    66,846.38x = 92,248.01 × 39,990.02
  4. Step 4: Simplify right side
    66,846.38x = 3,688,999,103.67
  5. Step 5: Solve for x
    x = 3,688,999,103.67/66,846.38
  6. Step 6: Final answer
    x = 55,186.23

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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.