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Finding the Fourth Proportional to 72,990.79, 100,727.30 and 41,159.70

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Solution

The fourth proportional to 72,990.79, 100,727.30 and 41,159.70 is: 56,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,990.79 : 100,727.30 = 41,159.70 : x
  2. Step 2: Convert to fraction form
    72,990.79/100,727.30 = 41,159.70/x
  3. Step 3: Cross multiply
    72,990.79x = 100,727.30 × 41,159.70
  4. Step 4: Simplify right side
    72,990.79x = 4,145,905,552.71
  5. Step 5: Solve for x
    x = 4,145,905,552.71/72,990.79
  6. Step 6: Final answer
    x = 56,800.39

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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.