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Finding the Fourth Proportional to 72,545.96, 100,155.08 and 48,340.54

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Solution

The fourth proportional to 72,545.96, 100,155.08 and 48,340.54 is: 66,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,545.96 : 100,155.08 = 48,340.54 : x
  2. Step 2: Convert to fraction form
    72,545.96/100,155.08 = 48,340.54/x
  3. Step 3: Cross multiply
    72,545.96x = 100,155.08 × 48,340.54
  4. Step 4: Simplify right side
    72,545.96x = 4,841,550,650.94
  5. Step 5: Solve for x
    x = 4,841,550,650.94/72,545.96
  6. Step 6: Final answer
    x = 66,737.70

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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.