Home / 55,190.86-76,161.12-31,317.02

Finding the Fourth Proportional to 55,190.86, 76,161.12 and 31,317.02

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Solution

The fourth proportional to 55,190.86, 76,161.12 and 31,317.02 is: 43,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,190.86 : 76,161.12 = 31,317.02 : x
  2. Step 2: Convert to fraction form
    55,190.86/76,161.12 = 31,317.02/x
  3. Step 3: Cross multiply
    55,190.86x = 76,161.12 × 31,317.02
  4. Step 4: Simplify right side
    55,190.86x = 2,385,139,318.26
  5. Step 5: Solve for x
    x = 2,385,139,318.26/55,190.86
  6. Step 6: Final answer
    x = 43,216.20

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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.