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Finding the Fourth Proportional to 43,153.48, 64,745.80 and 15,077.68

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Solution

The fourth proportional to 43,153.48, 64,745.80 and 15,077.68 is: 22,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,153.48 : 64,745.80 = 15,077.68 : x
  2. Step 2: Convert to fraction form
    43,153.48/64,745.80 = 15,077.68/x
  3. Step 3: Cross multiply
    43,153.48x = 64,745.80 × 15,077.68
  4. Step 4: Simplify right side
    43,153.48x = 976,216,453.74
  5. Step 5: Solve for x
    x = 976,216,453.74/43,153.48
  6. Step 6: Final answer
    x = 22,621.96

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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.