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Finding the Fourth Proportional to 79,810.60, 119,699.10 and 40,330.60

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Solution

The fourth proportional to 79,810.60, 119,699.10 and 40,330.60 is: 60,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,810.60 : 119,699.10 = 40,330.60 : x
  2. Step 2: Convert to fraction form
    79,810.60/119,699.10 = 40,330.60/x
  3. Step 3: Cross multiply
    79,810.60x = 119,699.10 × 40,330.60
  4. Step 4: Simplify right side
    79,810.60x = 4,827,536,522.46
  5. Step 5: Solve for x
    x = 4,827,536,522.46/79,810.60
  6. Step 6: Final answer
    x = 60,487.41

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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.