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Finding the Fourth Proportional to 79,116.70, 118,644.29 and 28,502.23

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Solution

The fourth proportional to 79,116.70, 118,644.29 and 28,502.23 is: 42,742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,116.70 : 118,644.29 = 28,502.23 : x
  2. Step 2: Convert to fraction form
    79,116.70/118,644.29 = 28,502.23/x
  3. Step 3: Cross multiply
    79,116.70x = 118,644.29 × 28,502.23
  4. Step 4: Simplify right side
    79,116.70x = 3,381,626,892.31
  5. Step 5: Solve for x
    x = 3,381,626,892.31/79,116.70
  6. Step 6: Final answer
    x = 42,742.26

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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.