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Finding the Fourth Proportional to 64,970.55, 89,644.05 and 36,670.77

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Solution

The fourth proportional to 64,970.55, 89,644.05 and 36,670.77 is: 50,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.55 : 89,644.05 = 36,670.77 : x
  2. Step 2: Convert to fraction form
    64,970.55/89,644.05 = 36,670.77/x
  3. Step 3: Cross multiply
    64,970.55x = 89,644.05 × 36,670.77
  4. Step 4: Simplify right side
    64,970.55x = 3,287,316,339.42
  5. Step 5: Solve for x
    x = 3,287,316,339.42/64,970.55
  6. Step 6: Final answer
    x = 50,597.02

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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.