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Finding the Fourth Proportional to 72,811.84, 100,511.34 and 48,952.36

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Solution

The fourth proportional to 72,811.84, 100,511.34 and 48,952.36 is: 67,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,811.84 : 100,511.34 = 48,952.36 : x
  2. Step 2: Convert to fraction form
    72,811.84/100,511.34 = 48,952.36/x
  3. Step 3: Cross multiply
    72,811.84x = 100,511.34 × 48,952.36
  4. Step 4: Simplify right side
    72,811.84x = 4,920,267,299.76
  5. Step 5: Solve for x
    x = 4,920,267,299.76/72,811.84
  6. Step 6: Final answer
    x = 67,575.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.