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Finding the Fourth Proportional to 89,319.64, 133,739.43 and 47,111.89

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Solution

The fourth proportional to 89,319.64, 133,739.43 and 47,111.89 is: 70,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,319.64 : 133,739.43 = 47,111.89 : x
  2. Step 2: Convert to fraction form
    89,319.64/133,739.43 = 47,111.89/x
  3. Step 3: Cross multiply
    89,319.64x = 133,739.43 × 47,111.89
  4. Step 4: Simplify right side
    89,319.64x = 6,300,717,314.82
  5. Step 5: Solve for x
    x = 6,300,717,314.82/89,319.64
  6. Step 6: Final answer
    x = 70,541.23

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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.