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Finding the Fourth Proportional to 66,155.90, 91,294.78 and 35,940.98

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Solution

The fourth proportional to 66,155.90, 91,294.78 and 35,940.98 is: 49,598.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,155.90 : 91,294.78 = 35,940.98 : x
  2. Step 2: Convert to fraction form
    66,155.90/91,294.78 = 35,940.98/x
  3. Step 3: Cross multiply
    66,155.90x = 91,294.78 × 35,940.98
  4. Step 4: Simplify right side
    66,155.90x = 3,281,223,862.08
  5. Step 5: Solve for x
    x = 3,281,223,862.08/66,155.90
  6. Step 6: Final answer
    x = 49,598.36

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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.