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Finding the Fourth Proportional to 76,121, 114,188.70 and 26,199.08

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Solution

The fourth proportional to 76,121, 114,188.70 and 26,199.08 is: 39,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,121 : 114,188.70 = 26,199.08 : x
  2. Step 2: Convert to fraction form
    76,121/114,188.70 = 26,199.08/x
  3. Step 3: Cross multiply
    76,121x = 114,188.70 × 26,199.08
  4. Step 4: Simplify right side
    76,121x = 2,991,638,886.40
  5. Step 5: Solve for x
    x = 2,991,638,886.40/76,121
  6. Step 6: Final answer
    x = 39,301.10

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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.