Home / 55,345.05-76,375.80-31,471.72

Finding the Fourth Proportional to 55,345.05, 76,375.80 and 31,471.72

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Solution

The fourth proportional to 55,345.05, 76,375.80 and 31,471.72 is: 43,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,345.05 : 76,375.80 = 31,471.72 : x
  2. Step 2: Convert to fraction form
    55,345.05/76,375.80 = 31,471.72/x
  3. Step 3: Cross multiply
    55,345.05x = 76,375.80 × 31,471.72
  4. Step 4: Simplify right side
    55,345.05x = 2,403,677,792.38
  5. Step 5: Solve for x
    x = 2,403,677,792.38/55,345.05
  6. Step 6: Final answer
    x = 43,430.76

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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.