Home / 72,219.81-99,688.38-49,633.56

Finding the Fourth Proportional to 72,219.81, 99,688.38 and 49,633.56

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Solution

The fourth proportional to 72,219.81, 99,688.38 and 49,633.56 is: 68,511.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,219.81 : 99,688.38 = 49,633.56 : x
  2. Step 2: Convert to fraction form
    72,219.81/99,688.38 = 49,633.56/x
  3. Step 3: Cross multiply
    72,219.81x = 99,688.38 × 49,633.56
  4. Step 4: Simplify right side
    72,219.81x = 4,947,889,749.99
  5. Step 5: Solve for x
    x = 4,947,889,749.99/72,219.81
  6. Step 6: Final answer
    x = 68,511.53

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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.