Home / 55,020.40-75,926.64-31,146.88

Finding the Fourth Proportional to 55,020.40, 75,926.64 and 31,146.88

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Solution

The fourth proportional to 55,020.40, 75,926.64 and 31,146.88 is: 42,981.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,020.40 : 75,926.64 = 31,146.88 : x
  2. Step 2: Convert to fraction form
    55,020.40/75,926.64 = 31,146.88/x
  3. Step 3: Cross multiply
    55,020.40x = 75,926.64 × 31,146.88
  4. Step 4: Simplify right side
    55,020.40x = 2,364,877,944.88
  5. Step 5: Solve for x
    x = 2,364,877,944.88/55,020.40
  6. Step 6: Final answer
    x = 42,981.84

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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.