Home / 56,820.12-78,412.68-31,669.56

Finding the Fourth Proportional to 56,820.12, 78,412.68 and 31,669.56

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Solution

The fourth proportional to 56,820.12, 78,412.68 and 31,669.56 is: 43,704.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,820.12 : 78,412.68 = 31,669.56 : x
  2. Step 2: Convert to fraction form
    56,820.12/78,412.68 = 31,669.56/x
  3. Step 3: Cross multiply
    56,820.12x = 78,412.68 × 31,669.56
  4. Step 4: Simplify right side
    56,820.12x = 2,483,295,074.02
  5. Step 5: Solve for x
    x = 2,483,295,074.02/56,820.12
  6. Step 6: Final answer
    x = 43,704.50

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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.