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Finding the Fourth Proportional to 64,977.80, 89,663.60 and 36,293.58

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Solution

The fourth proportional to 64,977.80, 89,663.60 and 36,293.58 is: 50,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,977.80 : 89,663.60 = 36,293.58 : x
  2. Step 2: Convert to fraction form
    64,977.80/89,663.60 = 36,293.58/x
  3. Step 3: Cross multiply
    64,977.80x = 89,663.60 × 36,293.58
  4. Step 4: Simplify right side
    64,977.80x = 3,254,213,130.42
  5. Step 5: Solve for x
    x = 3,254,213,130.42/64,977.80
  6. Step 6: Final answer
    x = 50,081.93

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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.