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Finding the Fourth Proportional to 66,351.66, 91,561.59 and 37,663.71

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Solution

The fourth proportional to 66,351.66, 91,561.59 and 37,663.71 is: 51,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,351.66 : 91,561.59 = 37,663.71 : x
  2. Step 2: Convert to fraction form
    66,351.66/91,561.59 = 37,663.71/x
  3. Step 3: Cross multiply
    66,351.66x = 91,561.59 × 37,663.71
  4. Step 4: Simplify right side
    66,351.66x = 3,448,549,172.90
  5. Step 5: Solve for x
    x = 3,448,549,172.90/66,351.66
  6. Step 6: Final answer
    x = 51,973.82

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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.