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Finding the Fourth Proportional to 52,269.80, 78,404.70 and 12,826.40

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Solution

The fourth proportional to 52,269.80, 78,404.70 and 12,826.40 is: 19,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,269.80 : 78,404.70 = 12,826.40 : x
  2. Step 2: Convert to fraction form
    52,269.80/78,404.70 = 12,826.40/x
  3. Step 3: Cross multiply
    52,269.80x = 78,404.70 × 12,826.40
  4. Step 4: Simplify right side
    52,269.80x = 1,005,650,044.08
  5. Step 5: Solve for x
    x = 1,005,650,044.08/52,269.80
  6. Step 6: Final answer
    x = 19,239.60

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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.