Home / 56,851.48-78,450.70-31,358.80

Finding the Fourth Proportional to 56,851.48, 78,450.70 and 31,358.80

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Solution

The fourth proportional to 56,851.48, 78,450.70 and 31,358.80 is: 43,272.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,851.48 : 78,450.70 = 31,358.80 : x
  2. Step 2: Convert to fraction form
    56,851.48/78,450.70 = 31,358.80/x
  3. Step 3: Cross multiply
    56,851.48x = 78,450.70 × 31,358.80
  4. Step 4: Simplify right side
    56,851.48x = 2,460,119,811.16
  5. Step 5: Solve for x
    x = 2,460,119,811.16/56,851.48
  6. Step 6: Final answer
    x = 43,272.75

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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.