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Finding the Fourth Proportional to 86,701.68, 119,651.04 and 48,978.36

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Solution

The fourth proportional to 86,701.68, 119,651.04 and 48,978.36 is: 67,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,701.68 : 119,651.04 = 48,978.36 : x
  2. Step 2: Convert to fraction form
    86,701.68/119,651.04 = 48,978.36/x
  3. Step 3: Cross multiply
    86,701.68x = 119,651.04 × 48,978.36
  4. Step 4: Simplify right side
    86,701.68x = 5,860,311,711.49
  5. Step 5: Solve for x
    x = 5,860,311,711.49/86,701.68
  6. Step 6: Final answer
    x = 67,591.67

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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.