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Finding the Fourth Proportional to 60,905.32, 91,367.83 and 18,775.54

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Solution

The fourth proportional to 60,905.32, 91,367.83 and 18,775.54 is: 28,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,905.32 : 91,367.83 = 18,775.54 : x
  2. Step 2: Convert to fraction form
    60,905.32/91,367.83 = 18,775.54/x
  3. Step 3: Cross multiply
    60,905.32x = 91,367.83 × 18,775.54
  4. Step 4: Simplify right side
    60,905.32x = 1,715,480,533.83
  5. Step 5: Solve for x
    x = 1,715,480,533.83/60,905.32
  6. Step 6: Final answer
    x = 28,166.35

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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.