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Finding the Fourth Proportional to 52,352.61, 78,529.74 and 12,909.73

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Solution

The fourth proportional to 52,352.61, 78,529.74 and 12,909.73 is: 19,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,352.61 : 78,529.74 = 12,909.73 : x
  2. Step 2: Convert to fraction form
    52,352.61/78,529.74 = 12,909.73/x
  3. Step 3: Cross multiply
    52,352.61x = 78,529.74 × 12,909.73
  4. Step 4: Simplify right side
    52,352.61x = 1,013,797,740.37
  5. Step 5: Solve for x
    x = 1,013,797,740.37/52,352.61
  6. Step 6: Final answer
    x = 19,364.80

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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.