Home / 86,021.39-129,032.08-26,862.12

Finding the Fourth Proportional to 86,021.39, 129,032.08 and 26,862.12

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Solution

The fourth proportional to 86,021.39, 129,032.08 and 26,862.12 is: 40,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,021.39 : 129,032.08 = 26,862.12 : x
  2. Step 2: Convert to fraction form
    86,021.39/129,032.08 = 26,862.12/x
  3. Step 3: Cross multiply
    86,021.39x = 129,032.08 × 26,862.12
  4. Step 4: Simplify right side
    86,021.39x = 3,466,075,149.65
  5. Step 5: Solve for x
    x = 3,466,075,149.65/86,021.39
  6. Step 6: Final answer
    x = 40,293.18

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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.