Home / 72,220.03-99,688.70-49,633.78

Finding the Fourth Proportional to 72,220.03, 99,688.70 and 49,633.78

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Solution

The fourth proportional to 72,220.03, 99,688.70 and 49,633.78 is: 68,511.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.03 : 99,688.70 = 49,633.78 : x
  2. Step 2: Convert to fraction form
    72,220.03/99,688.70 = 49,633.78/x
  3. Step 3: Cross multiply
    72,220.03x = 99,688.70 × 49,633.78
  4. Step 4: Simplify right side
    72,220.03x = 4,947,927,004.29
  5. Step 5: Solve for x
    x = 4,947,927,004.29/72,220.03
  6. Step 6: Final answer
    x = 68,511.84

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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.