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Finding the Fourth Proportional to 86,718.92, 130,075.40 and 36,766.85

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Solution

The fourth proportional to 86,718.92, 130,075.40 and 36,766.85 is: 55,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,718.92 : 130,075.40 = 36,766.85 : x
  2. Step 2: Convert to fraction form
    86,718.92/130,075.40 = 36,766.85/x
  3. Step 3: Cross multiply
    86,718.92x = 130,075.40 × 36,766.85
  4. Step 4: Simplify right side
    86,718.92x = 4,782,462,162.03
  5. Step 5: Solve for x
    x = 4,782,462,162.03/86,718.92
  6. Step 6: Final answer
    x = 55,149.01

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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.