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Finding the Fourth Proportional to 78,754.40, 118,110.42 and 28,834.76

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Solution

The fourth proportional to 78,754.40, 118,110.42 and 28,834.76 is: 43,244.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,754.40 : 118,110.42 = 28,834.76 : x
  2. Step 2: Convert to fraction form
    78,754.40/118,110.42 = 28,834.76/x
  3. Step 3: Cross multiply
    78,754.40x = 118,110.42 × 28,834.76
  4. Step 4: Simplify right side
    78,754.40x = 3,405,685,455.64
  5. Step 5: Solve for x
    x = 3,405,685,455.64/78,754.40
  6. Step 6: Final answer
    x = 43,244.38

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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.