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Finding the Fourth Proportional to 74,130.60, 102,194.82 and 45,820.20

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Solution

The fourth proportional to 74,130.60, 102,194.82 and 45,820.20 is: 63,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.60 : 102,194.82 = 45,820.20 : x
  2. Step 2: Convert to fraction form
    74,130.60/102,194.82 = 45,820.20/x
  3. Step 3: Cross multiply
    74,130.60x = 102,194.82 × 45,820.20
  4. Step 4: Simplify right side
    74,130.60x = 4,682,587,091.36
  5. Step 5: Solve for x
    x = 4,682,587,091.36/74,130.60
  6. Step 6: Final answer
    x = 63,166.72

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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.