Home / 66,172.26-91,365.39-40,712.88

Finding the Fourth Proportional to 66,172.26, 91,365.39 and 40,712.88

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Solution

The fourth proportional to 66,172.26, 91,365.39 and 40,712.88 is: 56,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.26 : 91,365.39 = 40,712.88 : x
  2. Step 2: Convert to fraction form
    66,172.26/91,365.39 = 40,712.88/x
  3. Step 3: Cross multiply
    66,172.26x = 91,365.39 × 40,712.88
  4. Step 4: Simplify right side
    66,172.26x = 3,719,748,159.22
  5. Step 5: Solve for x
    x = 3,719,748,159.22/66,172.26
  6. Step 6: Final answer
    x = 56,213.10

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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.