Home / 72,455.40-108,683.10-30,328.20

Finding the Fourth Proportional to 72,455.40, 108,683.10 and 30,328.20

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Solution

The fourth proportional to 72,455.40, 108,683.10 and 30,328.20 is: 45,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,455.40 : 108,683.10 = 30,328.20 : x
  2. Step 2: Convert to fraction form
    72,455.40/108,683.10 = 30,328.20/x
  3. Step 3: Cross multiply
    72,455.40x = 108,683.10 × 30,328.20
  4. Step 4: Simplify right side
    72,455.40x = 3,296,162,793.42
  5. Step 5: Solve for x
    x = 3,296,162,793.42/72,455.40
  6. Step 6: Final answer
    x = 45,492.30

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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.