Home / 86,432.30-129,618.46-30,271.16

Finding the Fourth Proportional to 86,432.30, 129,618.46 and 30,271.16

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Solution

The fourth proportional to 86,432.30, 129,618.46 and 30,271.16 is: 45,396.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,432.30 : 129,618.46 = 30,271.16 : x
  2. Step 2: Convert to fraction form
    86,432.30/129,618.46 = 30,271.16/x
  3. Step 3: Cross multiply
    86,432.30x = 129,618.46 × 30,271.16
  4. Step 4: Simplify right side
    86,432.30x = 3,923,701,503.50
  5. Step 5: Solve for x
    x = 3,923,701,503.50/86,432.30
  6. Step 6: Final answer
    x = 45,396.24

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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.