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Finding the Fourth Proportional to 64,740.98, 89,344.98 and 35,670.55

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Solution

The fourth proportional to 64,740.98, 89,344.98 and 35,670.55 is: 49,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,740.98 : 89,344.98 = 35,670.55 : x
  2. Step 2: Convert to fraction form
    64,740.98/89,344.98 = 35,670.55/x
  3. Step 3: Cross multiply
    64,740.98x = 89,344.98 × 35,670.55
  4. Step 4: Simplify right side
    64,740.98x = 3,186,984,129.61
  5. Step 5: Solve for x
    x = 3,186,984,129.61/64,740.98
  6. Step 6: Final answer
    x = 49,226.69

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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.