Home / 86,087.13-129,151.47-29,919.06

Finding the Fourth Proportional to 86,087.13, 129,151.47 and 29,919.06

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Solution

The fourth proportional to 86,087.13, 129,151.47 and 29,919.06 is: 44,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,087.13 : 129,151.47 = 29,919.06 : x
  2. Step 2: Convert to fraction form
    86,087.13/129,151.47 = 29,919.06/x
  3. Step 3: Cross multiply
    86,087.13x = 129,151.47 × 29,919.06
  4. Step 4: Simplify right side
    86,087.13x = 3,864,090,580.02
  5. Step 5: Solve for x
    x = 3,864,090,580.02/86,087.13
  6. Step 6: Final answer
    x = 44,885.81

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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.