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Finding the Fourth Proportional to 89,340.63, 133,886.88 and 39,345.81

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Solution

The fourth proportional to 89,340.63, 133,886.88 and 39,345.81 is: 58,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,340.63 : 133,886.88 = 39,345.81 : x
  2. Step 2: Convert to fraction form
    89,340.63/133,886.88 = 39,345.81/x
  3. Step 3: Cross multiply
    89,340.63x = 133,886.88 × 39,345.81
  4. Step 4: Simplify right side
    89,340.63x = 5,267,887,741.97
  5. Step 5: Solve for x
    x = 5,267,887,741.97/89,340.63
  6. Step 6: Final answer
    x = 58,964.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.