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Finding the Fourth Proportional to 66,116.85, 91,242.84 and 35,903.45

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Solution

The fourth proportional to 66,116.85, 91,242.84 and 35,903.45 is: 49,547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,116.85 : 91,242.84 = 35,903.45 : x
  2. Step 2: Convert to fraction form
    66,116.85/91,242.84 = 35,903.45/x
  3. Step 3: Cross multiply
    66,116.85x = 91,242.84 × 35,903.45
  4. Step 4: Simplify right side
    66,116.85x = 3,275,932,287.58
  5. Step 5: Solve for x
    x = 3,275,932,287.58/66,116.85
  6. Step 6: Final answer
    x = 49,547.62

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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.