Home / 65,370.10-90,216.84-38,520.94

Finding the Fourth Proportional to 65,370.10, 90,216.84 and 38,520.94

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Solution

The fourth proportional to 65,370.10, 90,216.84 and 38,520.94 is: 53,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,370.10 : 90,216.84 = 38,520.94 : x
  2. Step 2: Convert to fraction form
    65,370.10/90,216.84 = 38,520.94/x
  3. Step 3: Cross multiply
    65,370.10x = 90,216.84 × 38,520.94
  4. Step 4: Simplify right side
    65,370.10x = 3,475,237,480.63
  5. Step 5: Solve for x
    x = 3,475,237,480.63/65,370.10
  6. Step 6: Final answer
    x = 53,162.49

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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.