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Finding the Fourth Proportional to 66,116.88, 91,218.96 and 37,802.40

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Solution

The fourth proportional to 66,116.88, 91,218.96 and 37,802.40 is: 52,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,116.88 : 91,218.96 = 37,802.40 : x
  2. Step 2: Convert to fraction form
    66,116.88/91,218.96 = 37,802.40/x
  3. Step 3: Cross multiply
    66,116.88x = 91,218.96 × 37,802.40
  4. Step 4: Simplify right side
    66,116.88x = 3,448,295,613.50
  5. Step 5: Solve for x
    x = 3,448,295,613.50/66,116.88
  6. Step 6: Final answer
    x = 52,154.54

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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.