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Finding the Fourth Proportional to 115,886.03, 159,909.51 and 64,891.67

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Solution

The fourth proportional to 115,886.03, 159,909.51 and 64,891.67 is: 89,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,886.03 : 159,909.51 = 64,891.67 : x
  2. Step 2: Convert to fraction form
    115,886.03/159,909.51 = 64,891.67/x
  3. Step 3: Cross multiply
    115,886.03x = 159,909.51 × 64,891.67
  4. Step 4: Simplify right side
    115,886.03x = 10,376,795,152.78
  5. Step 5: Solve for x
    x = 10,376,795,152.78/115,886.03
  6. Step 6: Final answer
    x = 89,543.11

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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.