Home / 64,688.40-89,261.64-36,388.62

Finding the Fourth Proportional to 64,688.40, 89,261.64 and 36,388.62

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Solution

The fourth proportional to 64,688.40, 89,261.64 and 36,388.62 is: 50,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,688.40 : 89,261.64 = 36,388.62 : x
  2. Step 2: Convert to fraction form
    64,688.40/89,261.64 = 36,388.62/x
  3. Step 3: Cross multiply
    64,688.40x = 89,261.64 × 36,388.62
  4. Step 4: Simplify right side
    64,688.40x = 3,248,107,898.54
  5. Step 5: Solve for x
    x = 3,248,107,898.54/64,688.40
  6. Step 6: Final answer
    x = 50,211.60

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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.