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Finding the Fourth Proportional to 66,200.98, 91,355.34 and 37,904.80

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Solution

The fourth proportional to 66,200.98, 91,355.34 and 37,904.80 is: 52,307.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,200.98 : 91,355.34 = 37,904.80 : x
  2. Step 2: Convert to fraction form
    66,200.98/91,355.34 = 37,904.80/x
  3. Step 3: Cross multiply
    66,200.98x = 91,355.34 × 37,904.80
  4. Step 4: Simplify right side
    66,200.98x = 3,462,805,891.63
  5. Step 5: Solve for x
    x = 3,462,805,891.63/66,200.98
  6. Step 6: Final answer
    x = 52,307.47

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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.