Home / 56,451.08-77,906-31,300.58

Finding the Fourth Proportional to 56,451.08, 77,906 and 31,300.58

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Solution

The fourth proportional to 56,451.08, 77,906 and 31,300.58 is: 43,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,451.08 : 77,906 = 31,300.58 : x
  2. Step 2: Convert to fraction form
    56,451.08/77,906 = 31,300.58/x
  3. Step 3: Cross multiply
    56,451.08x = 77,906 × 31,300.58
  4. Step 4: Simplify right side
    56,451.08x = 2,438,502,985.48
  5. Step 5: Solve for x
    x = 2,438,502,985.48/56,451.08
  6. Step 6: Final answer
    x = 43,196.75

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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.