Home / 86,401.22-129,309.12-53,142.38

Finding the Fourth Proportional to 86,401.22, 129,309.12 and 53,142.38

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Solution

The fourth proportional to 86,401.22, 129,309.12 and 53,142.38 is: 79,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,401.22 : 129,309.12 = 53,142.38 : x
  2. Step 2: Convert to fraction form
    86,401.22/129,309.12 = 53,142.38/x
  3. Step 3: Cross multiply
    86,401.22x = 129,309.12 × 53,142.38
  4. Step 4: Simplify right side
    86,401.22x = 6,871,794,392.51
  5. Step 5: Solve for x
    x = 6,871,794,392.51/86,401.22
  6. Step 6: Final answer
    x = 79,533.53

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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.