Home / 72,021.40-108,032.10-19,436.20

Finding the Fourth Proportional to 72,021.40, 108,032.10 and 19,436.20

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Solution

The fourth proportional to 72,021.40, 108,032.10 and 19,436.20 is: 29,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,021.40 : 108,032.10 = 19,436.20 : x
  2. Step 2: Convert to fraction form
    72,021.40/108,032.10 = 19,436.20/x
  3. Step 3: Cross multiply
    72,021.40x = 108,032.10 × 19,436.20
  4. Step 4: Simplify right side
    72,021.40x = 2,099,733,502.02
  5. Step 5: Solve for x
    x = 2,099,733,502.02/72,021.40
  6. Step 6: Final answer
    x = 29,154.30

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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.