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Finding the Fourth Proportional to 72,816.98, 100,518.47 and 48,957.55

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Solution

The fourth proportional to 72,816.98, 100,518.47 and 48,957.55 is: 67,582.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,816.98 : 100,518.47 = 48,957.55 : x
  2. Step 2: Convert to fraction form
    72,816.98/100,518.47 = 48,957.55/x
  3. Step 3: Cross multiply
    72,816.98x = 100,518.47 × 48,957.55
  4. Step 4: Simplify right side
    72,816.98x = 4,921,137,708.46
  5. Step 5: Solve for x
    x = 4,921,137,708.46/72,816.98
  6. Step 6: Final answer
    x = 67,582.29

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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.