Home / 72,514.18-108,771.36-19,931.50

Finding the Fourth Proportional to 72,514.18, 108,771.36 and 19,931.50

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Solution

The fourth proportional to 72,514.18, 108,771.36 and 19,931.50 is: 29,897.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,514.18 : 108,771.36 = 19,931.50 : x
  2. Step 2: Convert to fraction form
    72,514.18/108,771.36 = 19,931.50/x
  3. Step 3: Cross multiply
    72,514.18x = 108,771.36 × 19,931.50
  4. Step 4: Simplify right side
    72,514.18x = 2,167,976,361.84
  5. Step 5: Solve for x
    x = 2,167,976,361.84/72,514.18
  6. Step 6: Final answer
    x = 29,897.27

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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.