Home / 87,239.51-130,859.33-28,075.17

Finding the Fourth Proportional to 87,239.51, 130,859.33 and 28,075.17

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Solution

The fourth proportional to 87,239.51, 130,859.33 and 28,075.17 is: 42,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,239.51 : 130,859.33 = 28,075.17 : x
  2. Step 2: Convert to fraction form
    87,239.51/130,859.33 = 28,075.17/x
  3. Step 3: Cross multiply
    87,239.51x = 130,859.33 × 28,075.17
  4. Step 4: Simplify right side
    87,239.51x = 3,673,897,935.84
  5. Step 5: Solve for x
    x = 3,673,897,935.84/87,239.51
  6. Step 6: Final answer
    x = 42,112.78

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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.