Home / 55,251.51-76,247.69-31,378.78

Finding the Fourth Proportional to 55,251.51, 76,247.69 and 31,378.78

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Solution

The fourth proportional to 55,251.51, 76,247.69 and 31,378.78 is: 43,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,251.51 : 76,247.69 = 31,378.78 : x
  2. Step 2: Convert to fraction form
    55,251.51/76,247.69 = 31,378.78/x
  3. Step 3: Cross multiply
    55,251.51x = 76,247.69 × 31,378.78
  4. Step 4: Simplify right side
    55,251.51x = 2,392,559,490.02
  5. Step 5: Solve for x
    x = 2,392,559,490.02/55,251.51
  6. Step 6: Final answer
    x = 43,303.06

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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.