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Finding the Fourth Proportional to 66,407.36, 91,642.14 and 36,599.36

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Solution

The fourth proportional to 66,407.36, 91,642.14 and 36,599.36 is: 50,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.36 : 91,642.14 = 36,599.36 : x
  2. Step 2: Convert to fraction form
    66,407.36/91,642.14 = 36,599.36/x
  3. Step 3: Cross multiply
    66,407.36x = 91,642.14 × 36,599.36
  4. Step 4: Simplify right side
    66,407.36x = 3,354,043,214.82
  5. Step 5: Solve for x
    x = 3,354,043,214.82/66,407.36
  6. Step 6: Final answer
    x = 50,507.10

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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.