Home / 56,436.08-77,877.18-30,942

Finding the Fourth Proportional to 56,436.08, 77,877.18 and 30,942

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Solution

The fourth proportional to 56,436.08, 77,877.18 and 30,942 is: 42,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,436.08 : 77,877.18 = 30,942 : x
  2. Step 2: Convert to fraction form
    56,436.08/77,877.18 = 30,942/x
  3. Step 3: Cross multiply
    56,436.08x = 77,877.18 × 30,942
  4. Step 4: Simplify right side
    56,436.08x = 2,409,675,703.56
  5. Step 5: Solve for x
    x = 2,409,675,703.56/56,436.08
  6. Step 6: Final answer
    x = 42,697.44

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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.