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Finding the Fourth Proportional to 79,730.76, 110,024.37 and 43,920

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Solution

The fourth proportional to 79,730.76, 110,024.37 and 43,920 is: 60,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,730.76 : 110,024.37 = 43,920 : x
  2. Step 2: Convert to fraction form
    79,730.76/110,024.37 = 43,920/x
  3. Step 3: Cross multiply
    79,730.76x = 110,024.37 × 43,920
  4. Step 4: Simplify right side
    79,730.76x = 4,832,270,330.40
  5. Step 5: Solve for x
    x = 4,832,270,330.40/79,730.76
  6. Step 6: Final answer
    x = 60,607.35

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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.