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Finding the Fourth Proportional to 76,444.40, 114,666.60 and 68,279.60

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Solution

The fourth proportional to 76,444.40, 114,666.60 and 68,279.60 is: 102,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,444.40 : 114,666.60 = 68,279.60 : x
  2. Step 2: Convert to fraction form
    76,444.40/114,666.60 = 68,279.60/x
  3. Step 3: Cross multiply
    76,444.40x = 114,666.60 × 68,279.60
  4. Step 4: Simplify right side
    76,444.40x = 7,829,389,581.36
  5. Step 5: Solve for x
    x = 7,829,389,581.36/76,444.40
  6. Step 6: Final answer
    x = 102,419.40

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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.