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Finding the Fourth Proportional to 77,110.40, 115,665.60 and 59,592.80

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Solution

The fourth proportional to 77,110.40, 115,665.60 and 59,592.80 is: 89,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,110.40 : 115,665.60 = 59,592.80 : x
  2. Step 2: Convert to fraction form
    77,110.40/115,665.60 = 59,592.80/x
  3. Step 3: Cross multiply
    77,110.40x = 115,665.60 × 59,592.80
  4. Step 4: Simplify right side
    77,110.40x = 6,892,836,967.68
  5. Step 5: Solve for x
    x = 6,892,836,967.68/77,110.40
  6. Step 6: Final answer
    x = 89,389.20

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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.