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Finding the Fourth Proportional to 56,970, 85,472.30 and 40,362.16

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Solution

The fourth proportional to 56,970, 85,472.30 and 40,362.16 is: 60,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,970 : 85,472.30 = 40,362.16 : x
  2. Step 2: Convert to fraction form
    56,970/85,472.30 = 40,362.16/x
  3. Step 3: Cross multiply
    56,970x = 85,472.30 × 40,362.16
  4. Step 4: Simplify right side
    56,970x = 3,449,846,648.17
  5. Step 5: Solve for x
    x = 3,449,846,648.17/56,970
  6. Step 6: Final answer
    x = 60,555.50

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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.