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Finding the Fourth Proportional to 86,601.30, 130,035.60 and 47,235.30

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Solution

The fourth proportional to 86,601.30, 130,035.60 and 47,235.30 is: 70,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,601.30 : 130,035.60 = 47,235.30 : x
  2. Step 2: Convert to fraction form
    86,601.30/130,035.60 = 47,235.30/x
  3. Step 3: Cross multiply
    86,601.30x = 130,035.60 × 47,235.30
  4. Step 4: Simplify right side
    86,601.30x = 6,142,270,576.68
  5. Step 5: Solve for x
    x = 6,142,270,576.68/86,601.30
  6. Step 6: Final answer
    x = 70,925.85

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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.