Home / 72,220.12-99,688.81-49,633.88

Finding the Fourth Proportional to 72,220.12, 99,688.81 and 49,633.88

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Solution

The fourth proportional to 72,220.12, 99,688.81 and 49,633.88 is: 68,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.12 : 99,688.81 = 49,633.88 : x
  2. Step 2: Convert to fraction form
    72,220.12/99,688.81 = 49,633.88/x
  3. Step 3: Cross multiply
    72,220.12x = 99,688.81 × 49,633.88
  4. Step 4: Simplify right side
    72,220.12x = 4,947,942,432.88
  5. Step 5: Solve for x
    x = 4,947,942,432.88/72,220.12
  6. Step 6: Final answer
    x = 68,511.97

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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.