Home / 86,186.72-129,248.07-30,012.41

Finding the Fourth Proportional to 86,186.72, 129,248.07 and 30,012.41

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Solution

The fourth proportional to 86,186.72, 129,248.07 and 30,012.41 is: 45,007.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,186.72 : 129,248.07 = 30,012.41 : x
  2. Step 2: Convert to fraction form
    86,186.72/129,248.07 = 30,012.41/x
  3. Step 3: Cross multiply
    86,186.72x = 129,248.07 × 30,012.41
  4. Step 4: Simplify right side
    86,186.72x = 3,879,046,068.55
  5. Step 5: Solve for x
    x = 3,879,046,068.55/86,186.72
  6. Step 6: Final answer
    x = 45,007.47

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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.