Home / 86,880.17-130,412.37-76,949.39

Finding the Fourth Proportional to 86,880.17, 130,412.37 and 76,949.39

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Solution

The fourth proportional to 86,880.17, 130,412.37 and 76,949.39 is: 115,505.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,880.17 : 130,412.37 = 76,949.39 : x
  2. Step 2: Convert to fraction form
    86,880.17/130,412.37 = 76,949.39/x
  3. Step 3: Cross multiply
    86,880.17x = 130,412.37 × 76,949.39
  4. Step 4: Simplify right side
    86,880.17x = 10,035,151,568.23
  5. Step 5: Solve for x
    x = 10,035,151,568.23/86,880.17
  6. Step 6: Final answer
    x = 115,505.66

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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.