Home / 55,337.68-76,364.32-31,139.99

Finding the Fourth Proportional to 55,337.68, 76,364.32 and 31,139.99

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Solution

The fourth proportional to 55,337.68, 76,364.32 and 31,139.99 is: 42,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,337.68 : 76,364.32 = 31,139.99 : x
  2. Step 2: Convert to fraction form
    55,337.68/76,364.32 = 31,139.99/x
  3. Step 3: Cross multiply
    55,337.68x = 76,364.32 × 31,139.99
  4. Step 4: Simplify right side
    55,337.68x = 2,377,984,475.79
  5. Step 5: Solve for x
    x = 2,377,984,475.79/55,337.68
  6. Step 6: Final answer
    x = 42,972.25

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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.