Home / 57,749.40-86,551.20-42,148.80

Finding the Fourth Proportional to 57,749.40, 86,551.20 and 42,148.80

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Solution

The fourth proportional to 57,749.40, 86,551.20 and 42,148.80 is: 63,169.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,749.40 : 86,551.20 = 42,148.80 : x
  2. Step 2: Convert to fraction form
    57,749.40/86,551.20 = 42,148.80/x
  3. Step 3: Cross multiply
    57,749.40x = 86,551.20 × 42,148.80
  4. Step 4: Simplify right side
    57,749.40x = 3,648,029,218.56
  5. Step 5: Solve for x
    x = 3,648,029,218.56/57,749.40
  6. Step 6: Final answer
    x = 63,169.99

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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.