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Finding the Fourth Proportional to 56,007.88, 84,010.75 and 13,888.08

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Solution

The fourth proportional to 56,007.88, 84,010.75 and 13,888.08 is: 20,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,007.88 : 84,010.75 = 13,888.08 : x
  2. Step 2: Convert to fraction form
    56,007.88/84,010.75 = 13,888.08/x
  3. Step 3: Cross multiply
    56,007.88x = 84,010.75 × 13,888.08
  4. Step 4: Simplify right side
    56,007.88x = 1,166,748,016.86
  5. Step 5: Solve for x
    x = 1,166,748,016.86/56,007.88
  6. Step 6: Final answer
    x = 20,831.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.