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Finding the Fourth Proportional to 72,602.60, 100,174.05 and 42,370.70

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Solution

The fourth proportional to 72,602.60, 100,174.05 and 42,370.70 is: 58,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602.60 : 100,174.05 = 42,370.70 : x
  2. Step 2: Convert to fraction form
    72,602.60/100,174.05 = 42,370.70/x
  3. Step 3: Cross multiply
    72,602.60x = 100,174.05 × 42,370.70
  4. Step 4: Simplify right side
    72,602.60x = 4,244,444,119.46
  5. Step 5: Solve for x
    x = 4,244,444,119.46/72,602.60
  6. Step 6: Final answer
    x = 58,461.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.