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Finding the Fourth Proportional to 79,215.40, 118,812.30 and 23,811.40

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Solution

The fourth proportional to 79,215.40, 118,812.30 and 23,811.40 is: 35,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,215.40 : 118,812.30 = 23,811.40 : x
  2. Step 2: Convert to fraction form
    79,215.40/118,812.30 = 23,811.40/x
  3. Step 3: Cross multiply
    79,215.40x = 118,812.30 × 23,811.40
  4. Step 4: Simplify right side
    79,215.40x = 2,829,087,200.22
  5. Step 5: Solve for x
    x = 2,829,087,200.22/79,215.40
  6. Step 6: Final answer
    x = 35,713.85

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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.