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Finding the Fourth Proportional to 79,031.70, 118,522.87 and 26,428.90

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Solution

The fourth proportional to 79,031.70, 118,522.87 and 26,428.90 is: 39,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,031.70 : 118,522.87 = 26,428.90 : x
  2. Step 2: Convert to fraction form
    79,031.70/118,522.87 = 26,428.90/x
  3. Step 3: Cross multiply
    79,031.70x = 118,522.87 × 26,428.90
  4. Step 4: Simplify right side
    79,031.70x = 3,132,429,078.94
  5. Step 5: Solve for x
    x = 3,132,429,078.94/79,031.70
  6. Step 6: Final answer
    x = 39,635.10

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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.