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Finding the Fourth Proportional to 104,030.40, 155,781.60 and 57,230.40

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Solution

The fourth proportional to 104,030.40, 155,781.60 and 57,230.40 is: 85,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,030.40 : 155,781.60 = 57,230.40 : x
  2. Step 2: Convert to fraction form
    104,030.40/155,781.60 = 57,230.40/x
  3. Step 3: Cross multiply
    104,030.40x = 155,781.60 × 57,230.40
  4. Step 4: Simplify right side
    104,030.40x = 8,915,443,280.64
  5. Step 5: Solve for x
    x = 8,915,443,280.64/104,030.40
  6. Step 6: Final answer
    x = 85,700.37

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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.