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Finding the Fourth Proportional to 60,270.40, 90,339.92 and 51,478.64

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Solution

The fourth proportional to 60,270.40, 90,339.92 and 51,478.64 is: 77,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,270.40 : 90,339.92 = 51,478.64 : x
  2. Step 2: Convert to fraction form
    60,270.40/90,339.92 = 51,478.64/x
  3. Step 3: Cross multiply
    60,270.40x = 90,339.92 × 51,478.64
  4. Step 4: Simplify right side
    60,270.40x = 4,650,576,219.31
  5. Step 5: Solve for x
    x = 4,650,576,219.31/60,270.40
  6. Step 6: Final answer
    x = 77,161.86

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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.