Home / 56,431.68-77,871.52-30,933.96

Finding the Fourth Proportional to 56,431.68, 77,871.52 and 30,933.96

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Solution

The fourth proportional to 56,431.68, 77,871.52 and 30,933.96 is: 42,686.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,431.68 : 77,871.52 = 30,933.96 : x
  2. Step 2: Convert to fraction form
    56,431.68/77,871.52 = 30,933.96/x
  3. Step 3: Cross multiply
    56,431.68x = 77,871.52 × 30,933.96
  4. Step 4: Simplify right side
    56,431.68x = 2,408,874,484.82
  5. Step 5: Solve for x
    x = 2,408,874,484.82/56,431.68
  6. Step 6: Final answer
    x = 42,686.56

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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.