Home / 72,219.75-99,688.30-49,633.50

Finding the Fourth Proportional to 72,219.75, 99,688.30 and 49,633.50

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Solution

The fourth proportional to 72,219.75, 99,688.30 and 49,633.50 is: 68,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,219.75 : 99,688.30 = 49,633.50 : x
  2. Step 2: Convert to fraction form
    72,219.75/99,688.30 = 49,633.50/x
  3. Step 3: Cross multiply
    72,219.75x = 99,688.30 × 49,633.50
  4. Step 4: Simplify right side
    72,219.75x = 4,947,879,238.05
  5. Step 5: Solve for x
    x = 4,947,879,238.05/72,219.75
  6. Step 6: Final answer
    x = 68,511.45

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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.