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Finding the Fourth Proportional to 86,040, 118,754.18 and 47,812.67

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Solution

The fourth proportional to 86,040, 118,754.18 and 47,812.67 is: 65,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,040 : 118,754.18 = 47,812.67 : x
  2. Step 2: Convert to fraction form
    86,040/118,754.18 = 47,812.67/x
  3. Step 3: Cross multiply
    86,040x = 118,754.18 × 47,812.67
  4. Step 4: Simplify right side
    86,040x = 5,677,953,586.63
  5. Step 5: Solve for x
    x = 5,677,953,586.63/86,040
  6. Step 6: Final answer
    x = 65,992.02

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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.