Home / 55,384.97-76,428.77-31,513.86

Finding the Fourth Proportional to 55,384.97, 76,428.77 and 31,513.86

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Solution

The fourth proportional to 55,384.97, 76,428.77 and 31,513.86 is: 43,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,384.97 : 76,428.77 = 31,513.86 : x
  2. Step 2: Convert to fraction form
    55,384.97/76,428.77 = 31,513.86/x
  3. Step 3: Cross multiply
    55,384.97x = 76,428.77 × 31,513.86
  4. Step 4: Simplify right side
    55,384.97x = 2,408,565,400.18
  5. Step 5: Solve for x
    x = 2,408,565,400.18/55,384.97
  6. Step 6: Final answer
    x = 43,487.71

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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.