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Finding the Fourth Proportional to 64,877.88, 89,531.34 and 36,583.40

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Solution

The fourth proportional to 64,877.88, 89,531.34 and 36,583.40 is: 50,485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,877.88 : 89,531.34 = 36,583.40 : x
  2. Step 2: Convert to fraction form
    64,877.88/89,531.34 = 36,583.40/x
  3. Step 3: Cross multiply
    64,877.88x = 89,531.34 × 36,583.40
  4. Step 4: Simplify right side
    64,877.88x = 3,275,360,823.76
  5. Step 5: Solve for x
    x = 3,275,360,823.76/64,877.88
  6. Step 6: Final answer
    x = 50,485.02

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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.