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Finding the Fourth Proportional to 47,859.59, 66,028.52 and 47,785.78

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Solution

The fourth proportional to 47,859.59, 66,028.52 and 47,785.78 is: 65,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,859.59 : 66,028.52 = 47,785.78 : x
  2. Step 2: Convert to fraction form
    47,859.59/66,028.52 = 47,785.78/x
  3. Step 3: Cross multiply
    47,859.59x = 66,028.52 × 47,785.78
  4. Step 4: Simplify right side
    47,859.59x = 3,155,224,330.45
  5. Step 5: Solve for x
    x = 3,155,224,330.45/47,859.59
  6. Step 6: Final answer
    x = 65,926.69

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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.