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Finding the Fourth Proportional to 64,985.50, 89,680.26 and 35,177.50

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Solution

The fourth proportional to 64,985.50, 89,680.26 and 35,177.50 is: 48,545.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,985.50 : 89,680.26 = 35,177.50 : x
  2. Step 2: Convert to fraction form
    64,985.50/89,680.26 = 35,177.50/x
  3. Step 3: Cross multiply
    64,985.50x = 89,680.26 × 35,177.50
  4. Step 4: Simplify right side
    64,985.50x = 3,154,727,346.15
  5. Step 5: Solve for x
    x = 3,154,727,346.15/64,985.50
  6. Step 6: Final answer
    x = 48,545.10

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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.