Home / 55,575.12-76,686.50-31,700.38

Finding the Fourth Proportional to 55,575.12, 76,686.50 and 31,700.38

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Solution

The fourth proportional to 55,575.12, 76,686.50 and 31,700.38 is: 43,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,575.12 : 76,686.50 = 31,700.38 : x
  2. Step 2: Convert to fraction form
    55,575.12/76,686.50 = 31,700.38/x
  3. Step 3: Cross multiply
    55,575.12x = 76,686.50 × 31,700.38
  4. Step 4: Simplify right side
    55,575.12x = 2,430,991,190.87
  5. Step 5: Solve for x
    x = 2,430,991,190.87/55,575.12
  6. Step 6: Final answer
    x = 43,742.44

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1.5x scale

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.