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Finding the Fourth Proportional to 66,343.63, 91,643.78 and 53,008.39

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Solution

The fourth proportional to 66,343.63, 91,643.78 and 53,008.39 is: 73,223.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,343.63 : 91,643.78 = 53,008.39 : x
  2. Step 2: Convert to fraction form
    66,343.63/91,643.78 = 53,008.39/x
  3. Step 3: Cross multiply
    66,343.63x = 91,643.78 × 53,008.39
  4. Step 4: Simplify right side
    66,343.63x = 4,857,889,231.31
  5. Step 5: Solve for x
    x = 4,857,889,231.31/66,343.63
  6. Step 6: Final answer
    x = 73,223.14

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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.