Home / 56,787.24-78,360.30-31,631.88

Finding the Fourth Proportional to 56,787.24, 78,360.30 and 31,631.88

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Solution

The fourth proportional to 56,787.24, 78,360.30 and 31,631.88 is: 43,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,787.24 : 78,360.30 = 31,631.88 : x
  2. Step 2: Convert to fraction form
    56,787.24/78,360.30 = 31,631.88/x
  3. Step 3: Cross multiply
    56,787.24x = 78,360.30 × 31,631.88
  4. Step 4: Simplify right side
    56,787.24x = 2,478,683,606.36
  5. Step 5: Solve for x
    x = 2,478,683,606.36/56,787.24
  6. Step 6: Final answer
    x = 43,648.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.