Home / 56,428.85-77,871.38-30,935.32

Finding the Fourth Proportional to 56,428.85, 77,871.38 and 30,935.32

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Solution

The fourth proportional to 56,428.85, 77,871.38 and 30,935.32 is: 42,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.85 : 77,871.38 = 30,935.32 : x
  2. Step 2: Convert to fraction form
    56,428.85/77,871.38 = 30,935.32/x
  3. Step 3: Cross multiply
    56,428.85x = 77,871.38 × 30,935.32
  4. Step 4: Simplify right side
    56,428.85x = 2,408,975,709.79
  5. Step 5: Solve for x
    x = 2,408,975,709.79/56,428.85
  6. Step 6: Final answer
    x = 42,690.50

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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.