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Finding the Fourth Proportional to 74,657.76, 103,028.52 and 42,829.62

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Solution

The fourth proportional to 74,657.76, 103,028.52 and 42,829.62 is: 59,105.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,657.76 : 103,028.52 = 42,829.62 : x
  2. Step 2: Convert to fraction form
    74,657.76/103,028.52 = 42,829.62/x
  3. Step 3: Cross multiply
    74,657.76x = 103,028.52 × 42,829.62
  4. Step 4: Simplify right side
    74,657.76x = 4,412,672,360.76
  5. Step 5: Solve for x
    x = 4,412,672,360.76/74,657.76
  6. Step 6: Final answer
    x = 59,105.34

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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.