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Finding the Fourth Proportional to 86,912.80, 119,947.44 and 51,084.88

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Solution

The fourth proportional to 86,912.80, 119,947.44 and 51,084.88 is: 70,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.80 : 119,947.44 = 51,084.88 : x
  2. Step 2: Convert to fraction form
    86,912.80/119,947.44 = 51,084.88/x
  3. Step 3: Cross multiply
    86,912.80x = 119,947.44 × 51,084.88
  4. Step 4: Simplify right side
    86,912.80x = 6,127,500,578.71
  5. Step 5: Solve for x
    x = 6,127,500,578.71/86,912.80
  6. Step 6: Final answer
    x = 70,501.70

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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.