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Finding the Fourth Proportional to 66,662.16, 92,000.20 and 39,804.46

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Solution

The fourth proportional to 66,662.16, 92,000.20 and 39,804.46 is: 54,933.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.16 : 92,000.20 = 39,804.46 : x
  2. Step 2: Convert to fraction form
    66,662.16/92,000.20 = 39,804.46/x
  3. Step 3: Cross multiply
    66,662.16x = 92,000.20 × 39,804.46
  4. Step 4: Simplify right side
    66,662.16x = 3,662,018,280.89
  5. Step 5: Solve for x
    x = 3,662,018,280.89/66,662.16
  6. Step 6: Final answer
    x = 54,933.99

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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.