Home / 90,909.48-136,422.90-38,319.24

Finding the Fourth Proportional to 90,909.48, 136,422.90 and 38,319.24

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Solution

The fourth proportional to 90,909.48, 136,422.90 and 38,319.24 is: 57,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.48 : 136,422.90 = 38,319.24 : x
  2. Step 2: Convert to fraction form
    90,909.48/136,422.90 = 38,319.24/x
  3. Step 3: Cross multiply
    90,909.48x = 136,422.90 × 38,319.24
  4. Step 4: Simplify right side
    90,909.48x = 5,227,621,846.60
  5. Step 5: Solve for x
    x = 5,227,621,846.60/90,909.48
  6. Step 6: Final answer
    x = 57,503.59

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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.