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Finding the Fourth Proportional to 77,990.40, 116,976.96 and 22,586.40

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Solution

The fourth proportional to 77,990.40, 116,976.96 and 22,586.40 is: 33,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.40 : 116,976.96 = 22,586.40 : x
  2. Step 2: Convert to fraction form
    77,990.40/116,976.96 = 22,586.40/x
  3. Step 3: Cross multiply
    77,990.40x = 116,976.96 × 22,586.40
  4. Step 4: Simplify right side
    77,990.40x = 2,642,088,409.34
  5. Step 5: Solve for x
    x = 2,642,088,409.34/77,990.40
  6. Step 6: Final answer
    x = 33,877.10

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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.