Home / 79,587.32-119,381.04-20,423

Finding the Fourth Proportional to 79,587.32, 119,381.04 and 20,423

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Solution

The fourth proportional to 79,587.32, 119,381.04 and 20,423 is: 30,634.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,587.32 : 119,381.04 = 20,423 : x
  2. Step 2: Convert to fraction form
    79,587.32/119,381.04 = 20,423/x
  3. Step 3: Cross multiply
    79,587.32x = 119,381.04 × 20,423
  4. Step 4: Simplify right side
    79,587.32x = 2,438,118,979.92
  5. Step 5: Solve for x
    x = 2,438,118,979.92/79,587.32
  6. Step 6: Final answer
    x = 30,634.52

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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.