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Finding the Fourth Proportional to 86,901.38, 119,923.90 and 47,157.38

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Solution

The fourth proportional to 86,901.38, 119,923.90 and 47,157.38 is: 65,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.38 : 119,923.90 = 47,157.38 : x
  2. Step 2: Convert to fraction form
    86,901.38/119,923.90 = 47,157.38/x
  3. Step 3: Cross multiply
    86,901.38x = 119,923.90 × 47,157.38
  4. Step 4: Simplify right side
    86,901.38x = 5,655,296,205.87
  5. Step 5: Solve for x
    x = 5,655,296,205.87/86,901.38
  6. Step 6: Final answer
    x = 65,077.18

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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.