Home / 55,153.96-76,116.40-31,282.72

Finding the Fourth Proportional to 55,153.96, 76,116.40 and 31,282.72

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Solution

The fourth proportional to 55,153.96, 76,116.40 and 31,282.72 is: 43,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,153.96 : 76,116.40 = 31,282.72 : x
  2. Step 2: Convert to fraction form
    55,153.96/76,116.40 = 31,282.72/x
  3. Step 3: Cross multiply
    55,153.96x = 76,116.40 × 31,282.72
  4. Step 4: Simplify right side
    55,153.96x = 2,381,128,028.61
  5. Step 5: Solve for x
    x = 2,381,128,028.61/55,153.96
  6. Step 6: Final answer
    x = 43,172.39

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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.