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Finding the Fourth Proportional to 45,337.60, 68,038.80 and 19,061.20

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Solution

The fourth proportional to 45,337.60, 68,038.80 and 19,061.20 is: 28,605.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,337.60 : 68,038.80 = 19,061.20 : x
  2. Step 2: Convert to fraction form
    45,337.60/68,038.80 = 19,061.20/x
  3. Step 3: Cross multiply
    45,337.60x = 68,038.80 × 19,061.20
  4. Step 4: Simplify right side
    45,337.60x = 1,296,901,174.56
  5. Step 5: Solve for x
    x = 1,296,901,174.56/45,337.60
  6. Step 6: Final answer
    x = 28,605.42

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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.