Home / 86,530.78-129,719.02-46,571.21

Finding the Fourth Proportional to 86,530.78, 129,719.02 and 46,571.21

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Solution

The fourth proportional to 86,530.78, 129,719.02 and 46,571.21 is: 69,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,530.78 : 129,719.02 = 46,571.21 : x
  2. Step 2: Convert to fraction form
    86,530.78/129,719.02 = 46,571.21/x
  3. Step 3: Cross multiply
    86,530.78x = 129,719.02 × 46,571.21
  4. Step 4: Simplify right side
    86,530.78x = 6,041,171,721.41
  5. Step 5: Solve for x
    x = 6,041,171,721.41/86,530.78
  6. Step 6: Final answer
    x = 69,815.29

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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.