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Finding the Fourth Proportional to 66,674.74, 91,967.79 and 42,763.54

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Solution

The fourth proportional to 66,674.74, 91,967.79 and 42,763.54 is: 58,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,674.74 : 91,967.79 = 42,763.54 : x
  2. Step 2: Convert to fraction form
    66,674.74/91,967.79 = 42,763.54/x
  3. Step 3: Cross multiply
    66,674.74x = 91,967.79 × 42,763.54
  4. Step 4: Simplify right side
    66,674.74x = 3,932,868,266.38
  5. Step 5: Solve for x
    x = 3,932,868,266.38/66,674.74
  6. Step 6: Final answer
    x = 58,985.88

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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.