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Finding the Fourth Proportional to 84,989.81, 127,427.19 and 47,575.71

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Solution

The fourth proportional to 84,989.81, 127,427.19 and 47,575.71 is: 71,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,989.81 : 127,427.19 = 47,575.71 : x
  2. Step 2: Convert to fraction form
    84,989.81/127,427.19 = 47,575.71/x
  3. Step 3: Cross multiply
    84,989.81x = 127,427.19 × 47,575.71
  4. Step 4: Simplify right side
    84,989.81x = 6,062,439,037.55
  5. Step 5: Solve for x
    x = 6,062,439,037.55/84,989.81
  6. Step 6: Final answer
    x = 71,331.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.