Home / 86,401.50-129,653.28-36,478.37

Finding the Fourth Proportional to 86,401.50, 129,653.28 and 36,478.37

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Solution

The fourth proportional to 86,401.50, 129,653.28 and 36,478.37 is: 54,739.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,401.50 : 129,653.28 = 36,478.37 : x
  2. Step 2: Convert to fraction form
    86,401.50/129,653.28 = 36,478.37/x
  3. Step 3: Cross multiply
    86,401.50x = 129,653.28 × 36,478.37
  4. Step 4: Simplify right side
    86,401.50x = 4,729,539,671.29
  5. Step 5: Solve for x
    x = 4,729,539,671.29/86,401.50
  6. Step 6: Final answer
    x = 54,739.09

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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.