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Finding the Fourth Proportional to 115,645.59, 159,594.30 and 64,656.90

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Solution

The fourth proportional to 115,645.59, 159,594.30 and 64,656.90 is: 89,228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,645.59 : 159,594.30 = 64,656.90 : x
  2. Step 2: Convert to fraction form
    115,645.59/159,594.30 = 64,656.90/x
  3. Step 3: Cross multiply
    115,645.59x = 159,594.30 × 64,656.90
  4. Step 4: Simplify right side
    115,645.59x = 10,318,872,695.67
  5. Step 5: Solve for x
    x = 10,318,872,695.67/115,645.59
  6. Step 6: Final answer
    x = 89,228.41

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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.