Home / 56,513.40-77,992.12-31,362.90

Finding the Fourth Proportional to 56,513.40, 77,992.12 and 31,362.90

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Solution

The fourth proportional to 56,513.40, 77,992.12 and 31,362.90 is: 43,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,513.40 : 77,992.12 = 31,362.90 : x
  2. Step 2: Convert to fraction form
    56,513.40/77,992.12 = 31,362.90/x
  3. Step 3: Cross multiply
    56,513.40x = 77,992.12 × 31,362.90
  4. Step 4: Simplify right side
    56,513.40x = 2,446,059,060.35
  5. Step 5: Solve for x
    x = 2,446,059,060.35/56,513.40
  6. Step 6: Final answer
    x = 43,282.82

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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.