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Finding the Fourth Proportional to 85,321.56, 117,743.40 and 47,595.76

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Solution

The fourth proportional to 85,321.56, 117,743.40 and 47,595.76 is: 65,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,321.56 : 117,743.40 = 47,595.76 : x
  2. Step 2: Convert to fraction form
    85,321.56/117,743.40 = 47,595.76/x
  3. Step 3: Cross multiply
    85,321.56x = 117,743.40 × 47,595.76
  4. Step 4: Simplify right side
    85,321.56x = 5,604,086,607.98
  5. Step 5: Solve for x
    x = 5,604,086,607.98/85,321.56
  6. Step 6: Final answer
    x = 65,681.95

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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.