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Finding the Fourth Proportional to 87,237, 130,749.84 and 39,787.07

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Solution

The fourth proportional to 87,237, 130,749.84 and 39,787.07 is: 59,632.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,237 : 130,749.84 = 39,787.07 : x
  2. Step 2: Convert to fraction form
    87,237/130,749.84 = 39,787.07/x
  3. Step 3: Cross multiply
    87,237x = 130,749.84 × 39,787.07
  4. Step 4: Simplify right side
    87,237x = 5,202,152,382.82
  5. Step 5: Solve for x
    x = 5,202,152,382.82/87,237
  6. Step 6: Final answer
    x = 59,632.41

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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.