Home / 86,685.36-130,069.16-60,072.28

Finding the Fourth Proportional to 86,685.36, 130,069.16 and 60,072.28

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Solution

The fourth proportional to 86,685.36, 130,069.16 and 60,072.28 is: 90,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,685.36 : 130,069.16 = 60,072.28 : x
  2. Step 2: Convert to fraction form
    86,685.36/130,069.16 = 60,072.28/x
  3. Step 3: Cross multiply
    86,685.36x = 130,069.16 × 60,072.28
  4. Step 4: Simplify right side
    86,685.36x = 7,813,550,998.88
  5. Step 5: Solve for x
    x = 7,813,550,998.88/86,685.36
  6. Step 6: Final answer
    x = 90,136.92

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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.