Home / 55,364.27-76,400.30-31,490.74

Finding the Fourth Proportional to 55,364.27, 76,400.30 and 31,490.74

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Solution

The fourth proportional to 55,364.27, 76,400.30 and 31,490.74 is: 43,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,364.27 : 76,400.30 = 31,490.74 : x
  2. Step 2: Convert to fraction form
    55,364.27/76,400.30 = 31,490.74/x
  3. Step 3: Cross multiply
    55,364.27x = 76,400.30 × 31,490.74
  4. Step 4: Simplify right side
    55,364.27x = 2,405,901,870.95
  5. Step 5: Solve for x
    x = 2,405,901,870.95/55,364.27
  6. Step 6: Final answer
    x = 43,455.86

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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.