Home / 87,009.51-120,075.57-49,283.76

Finding the Fourth Proportional to 87,009.51, 120,075.57 and 49,283.76

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Solution

The fourth proportional to 87,009.51, 120,075.57 and 49,283.76 is: 68,012.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,009.51 : 120,075.57 = 49,283.76 : x
  2. Step 2: Convert to fraction form
    87,009.51/120,075.57 = 49,283.76/x
  3. Step 3: Cross multiply
    87,009.51x = 120,075.57 × 49,283.76
  4. Step 4: Simplify right side
    87,009.51x = 5,917,775,573.74
  5. Step 5: Solve for x
    x = 5,917,775,573.74/87,009.51
  6. Step 6: Final answer
    x = 68,012.97

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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.