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Finding the Fourth Proportional to 66,155, 91,294.86 and 35,940.86

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Solution

The fourth proportional to 66,155, 91,294.86 and 35,940.86 is: 49,598.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,155 : 91,294.86 = 35,940.86 : x
  2. Step 2: Convert to fraction form
    66,155/91,294.86 = 35,940.86/x
  3. Step 3: Cross multiply
    66,155x = 91,294.86 × 35,940.86
  4. Step 4: Simplify right side
    66,155x = 3,281,215,781.98
  5. Step 5: Solve for x
    x = 3,281,215,781.98/66,155
  6. Step 6: Final answer
    x = 49,598.91

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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.