Home / 56,911.46-78,537.34-31,417.80

Finding the Fourth Proportional to 56,911.46, 78,537.34 and 31,417.80

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Solution

The fourth proportional to 56,911.46, 78,537.34 and 31,417.80 is: 43,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,911.46 : 78,537.34 = 31,417.80 : x
  2. Step 2: Convert to fraction form
    56,911.46/78,537.34 = 31,417.80/x
  3. Step 3: Cross multiply
    56,911.46x = 78,537.34 × 31,417.80
  4. Step 4: Simplify right side
    56,911.46x = 2,467,470,440.65
  5. Step 5: Solve for x
    x = 2,467,470,440.65/56,911.46
  6. Step 6: Final answer
    x = 43,356.30

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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.