Home / 86,329.72-129,352.02-39,479.32

Finding the Fourth Proportional to 86,329.72, 129,352.02 and 39,479.32

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Solution

The fourth proportional to 86,329.72, 129,352.02 and 39,479.32 is: 59,153.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,329.72 : 129,352.02 = 39,479.32 : x
  2. Step 2: Convert to fraction form
    86,329.72/129,352.02 = 39,479.32/x
  3. Step 3: Cross multiply
    86,329.72x = 129,352.02 × 39,479.32
  4. Step 4: Simplify right side
    86,329.72x = 5,106,729,790.23
  5. Step 5: Solve for x
    x = 5,106,729,790.23/86,329.72
  6. Step 6: Final answer
    x = 59,153.79

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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.