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Finding the Fourth Proportional to 64,870.80, 97,319.96 and 36,803.76

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Solution

The fourth proportional to 64,870.80, 97,319.96 and 36,803.76 is: 55,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,870.80 : 97,319.96 = 36,803.76 : x
  2. Step 2: Convert to fraction form
    64,870.80/97,319.96 = 36,803.76/x
  3. Step 3: Cross multiply
    64,870.80x = 97,319.96 × 36,803.76
  4. Step 4: Simplify right side
    64,870.80x = 3,581,740,451.05
  5. Step 5: Solve for x
    x = 3,581,740,451.05/64,870.80
  6. Step 6: Final answer
    x = 55,213.45

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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.