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Finding the Fourth Proportional to 66,425.79, 91,669.29 and 40,948.99

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Solution

The fourth proportional to 66,425.79, 91,669.29 and 40,948.99 is: 56,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,425.79 : 91,669.29 = 40,948.99 : x
  2. Step 2: Convert to fraction form
    66,425.79/91,669.29 = 40,948.99/x
  3. Step 3: Cross multiply
    66,425.79x = 91,669.29 × 40,948.99
  4. Step 4: Simplify right side
    66,425.79x = 3,753,764,610.34
  5. Step 5: Solve for x
    x = 3,753,764,610.34/66,425.79
  6. Step 6: Final answer
    x = 56,510.65

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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.