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Finding the Fourth Proportional to 86,468.63, 119,328.53 and 48,742.88

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Solution

The fourth proportional to 86,468.63, 119,328.53 and 48,742.88 is: 67,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,468.63 : 119,328.53 = 48,742.88 : x
  2. Step 2: Convert to fraction form
    86,468.63/119,328.53 = 48,742.88/x
  3. Step 3: Cross multiply
    86,468.63x = 119,328.53 × 48,742.88
  4. Step 4: Simplify right side
    86,468.63x = 5,816,415,378.01
  5. Step 5: Solve for x
    x = 5,816,415,378.01/86,468.63
  6. Step 6: Final answer
    x = 67,266.19

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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.