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Finding the Fourth Proportional to 64,376.88, 88,791.29 and 56,405.26

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Solution

The fourth proportional to 64,376.88, 88,791.29 and 56,405.26 is: 77,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,376.88 : 88,791.29 = 56,405.26 : x
  2. Step 2: Convert to fraction form
    64,376.88/88,791.29 = 56,405.26/x
  3. Step 3: Cross multiply
    64,376.88x = 88,791.29 × 56,405.26
  4. Step 4: Simplify right side
    64,376.88x = 5,008,295,838.67
  5. Step 5: Solve for x
    x = 5,008,295,838.67/64,376.88
  6. Step 6: Final answer
    x = 77,796.50

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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.