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Finding the Fourth Proportional to 112,423.40, 168,644.70 and 38,551.40

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Solution

The fourth proportional to 112,423.40, 168,644.70 and 38,551.40 is: 57,830.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,423.40 : 168,644.70 = 38,551.40 : x
  2. Step 2: Convert to fraction form
    112,423.40/168,644.70 = 38,551.40/x
  3. Step 3: Cross multiply
    112,423.40x = 168,644.70 × 38,551.40
  4. Step 4: Simplify right side
    112,423.40x = 6,501,489,287.58
  5. Step 5: Solve for x
    x = 6,501,489,287.58/112,423.40
  6. Step 6: Final answer
    x = 57,830.39

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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.