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Finding the Fourth Proportional to 64,531.50, 89,014.86 and 40,616.66

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Solution

The fourth proportional to 64,531.50, 89,014.86 and 40,616.66 is: 56,026.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,531.50 : 89,014.86 = 40,616.66 : x
  2. Step 2: Convert to fraction form
    64,531.50/89,014.86 = 40,616.66/x
  3. Step 3: Cross multiply
    64,531.50x = 89,014.86 × 40,616.66
  4. Step 4: Simplify right side
    64,531.50x = 3,615,485,858.49
  5. Step 5: Solve for x
    x = 3,615,485,858.49/64,531.50
  6. Step 6: Final answer
    x = 56,026.68

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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.