Home / 66,310.78-91,543.62-51,170.68

Finding the Fourth Proportional to 66,310.78, 91,543.62 and 51,170.68

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Solution

The fourth proportional to 66,310.78, 91,543.62 and 51,170.68 is: 70,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,310.78 : 91,543.62 = 51,170.68 : x
  2. Step 2: Convert to fraction form
    66,310.78/91,543.62 = 51,170.68/x
  3. Step 3: Cross multiply
    66,310.78x = 91,543.62 × 51,170.68
  4. Step 4: Simplify right side
    66,310.78x = 4,684,349,285.06
  5. Step 5: Solve for x
    x = 4,684,349,285.06/66,310.78
  6. Step 6: Final answer
    x = 70,642.35

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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.