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Finding the Fourth Proportional to 68,575.90, 94,653.78 and 39,901.10

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Solution

The fourth proportional to 68,575.90, 94,653.78 and 39,901.10 is: 55,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,575.90 : 94,653.78 = 39,901.10 : x
  2. Step 2: Convert to fraction form
    68,575.90/94,653.78 = 39,901.10/x
  3. Step 3: Cross multiply
    68,575.90x = 94,653.78 × 39,901.10
  4. Step 4: Simplify right side
    68,575.90x = 3,776,789,941.16
  5. Step 5: Solve for x
    x = 3,776,789,941.16/68,575.90
  6. Step 6: Final answer
    x = 55,074.60

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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.