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Finding the Fourth Proportional to 64,489.68, 89,025.99 and 43,015.35

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Solution

The fourth proportional to 64,489.68, 89,025.99 and 43,015.35 is: 59,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.68 : 89,025.99 = 43,015.35 : x
  2. Step 2: Convert to fraction form
    64,489.68/89,025.99 = 43,015.35/x
  3. Step 3: Cross multiply
    64,489.68x = 89,025.99 × 43,015.35
  4. Step 4: Simplify right side
    64,489.68x = 3,829,484,118.95
  5. Step 5: Solve for x
    x = 3,829,484,118.95/64,489.68
  6. Step 6: Final answer
    x = 59,381.35

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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.