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Finding the Fourth Proportional to 79,213.76, 118,746.81 and 39,724.73

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Solution

The fourth proportional to 79,213.76, 118,746.81 and 39,724.73 is: 59,550.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.76 : 118,746.81 = 39,724.73 : x
  2. Step 2: Convert to fraction form
    79,213.76/118,746.81 = 39,724.73/x
  3. Step 3: Cross multiply
    79,213.76x = 118,746.81 × 39,724.73
  4. Step 4: Simplify right side
    79,213.76x = 4,717,184,965.61
  5. Step 5: Solve for x
    x = 4,717,184,965.61/79,213.76
  6. Step 6: Final answer
    x = 59,550.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.