Home / 56,135.79-77,466.22-30,642.66

Finding the Fourth Proportional to 56,135.79, 77,466.22 and 30,642.66

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Solution

The fourth proportional to 56,135.79, 77,466.22 and 30,642.66 is: 42,286.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,135.79 : 77,466.22 = 30,642.66 : x
  2. Step 2: Convert to fraction form
    56,135.79/77,466.22 = 30,642.66/x
  3. Step 3: Cross multiply
    56,135.79x = 77,466.22 × 30,642.66
  4. Step 4: Simplify right side
    56,135.79x = 2,373,771,040.95
  5. Step 5: Solve for x
    x = 2,373,771,040.95/56,135.79
  6. Step 6: Final answer
    x = 42,286.23

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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.