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Finding the Fourth Proportional to 79,905.76, 119,671.92 and 63,153.40

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Solution

The fourth proportional to 79,905.76, 119,671.92 and 63,153.40 is: 94,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,905.76 : 119,671.92 = 63,153.40 : x
  2. Step 2: Convert to fraction form
    79,905.76/119,671.92 = 63,153.40/x
  3. Step 3: Cross multiply
    79,905.76x = 119,671.92 × 63,153.40
  4. Step 4: Simplify right side
    79,905.76x = 7,557,688,632.53
  5. Step 5: Solve for x
    x = 7,557,688,632.53/79,905.76
  6. Step 6: Final answer
    x = 94,582.53

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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.