Home / 56,771.16-78,347.70-31,620.66

Finding the Fourth Proportional to 56,771.16, 78,347.70 and 31,620.66

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Solution

The fourth proportional to 56,771.16, 78,347.70 and 31,620.66 is: 43,638.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,771.16 : 78,347.70 = 31,620.66 : x
  2. Step 2: Convert to fraction form
    56,771.16/78,347.70 = 31,620.66/x
  3. Step 3: Cross multiply
    56,771.16x = 78,347.70 × 31,620.66
  4. Step 4: Simplify right side
    56,771.16x = 2,477,405,983.48
  5. Step 5: Solve for x
    x = 2,477,405,983.48/56,771.16
  6. Step 6: Final answer
    x = 43,638.46

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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.