Home / 72,220.75-99,689.68-49,634.50

Finding the Fourth Proportional to 72,220.75, 99,689.68 and 49,634.50

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Solution

The fourth proportional to 72,220.75, 99,689.68 and 49,634.50 is: 68,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.75 : 99,689.68 = 49,634.50 : x
  2. Step 2: Convert to fraction form
    72,220.75/99,689.68 = 49,634.50/x
  3. Step 3: Cross multiply
    72,220.75x = 99,689.68 × 49,634.50
  4. Step 4: Simplify right side
    72,220.75x = 4,948,047,421.96
  5. Step 5: Solve for x
    x = 4,948,047,421.96/72,220.75
  6. Step 6: Final answer
    x = 68,512.82

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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.