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Finding the Fourth Proportional to 77,388.50, 115,971.57 and 59,549.87

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Solution

The fourth proportional to 77,388.50, 115,971.57 and 59,549.87 is: 89,239.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,388.50 : 115,971.57 = 59,549.87 : x
  2. Step 2: Convert to fraction form
    77,388.50/115,971.57 = 59,549.87/x
  3. Step 3: Cross multiply
    77,388.50x = 115,971.57 × 59,549.87
  4. Step 4: Simplify right side
    77,388.50x = 6,906,091,337.34
  5. Step 5: Solve for x
    x = 6,906,091,337.34/77,388.50
  6. Step 6: Final answer
    x = 89,239.25

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1.5x scale

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.