Home / 86,349.69-129,487.48-30,172.95

Finding the Fourth Proportional to 86,349.69, 129,487.48 and 30,172.95

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Solution

The fourth proportional to 86,349.69, 129,487.48 and 30,172.95 is: 45,246.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,349.69 : 129,487.48 = 30,172.95 : x
  2. Step 2: Convert to fraction form
    86,349.69/129,487.48 = 30,172.95/x
  3. Step 3: Cross multiply
    86,349.69x = 129,487.48 × 30,172.95
  4. Step 4: Simplify right side
    86,349.69x = 3,907,019,184.23
  5. Step 5: Solve for x
    x = 3,907,019,184.23/86,349.69
  6. Step 6: Final answer
    x = 45,246.48

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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.