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Finding the Fourth Proportional to 85,296.64, 117,715.20 and 47,570.56

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Solution

The fourth proportional to 85,296.64, 117,715.20 and 47,570.56 is: 65,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,296.64 : 117,715.20 = 47,570.56 : x
  2. Step 2: Convert to fraction form
    85,296.64/117,715.20 = 47,570.56/x
  3. Step 3: Cross multiply
    85,296.64x = 117,715.20 × 47,570.56
  4. Step 4: Simplify right side
    85,296.64x = 5,599,777,984.51
  5. Step 5: Solve for x
    x = 5,599,777,984.51/85,296.64
  6. Step 6: Final answer
    x = 65,650.63

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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.