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Finding the Fourth Proportional to 74,433.70, 111,650.55 and 42,811.30

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Solution

The fourth proportional to 74,433.70, 111,650.55 and 42,811.30 is: 64,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,433.70 : 111,650.55 = 42,811.30 : x
  2. Step 2: Convert to fraction form
    74,433.70/111,650.55 = 42,811.30/x
  3. Step 3: Cross multiply
    74,433.70x = 111,650.55 × 42,811.30
  4. Step 4: Simplify right side
    74,433.70x = 4,779,905,191.22
  5. Step 5: Solve for x
    x = 4,779,905,191.22/74,433.70
  6. Step 6: Final answer
    x = 64,216.95

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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.