Home / 71,623.20-107,434.80-38,445.60

Finding the Fourth Proportional to 71,623.20, 107,434.80 and 38,445.60

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Solution

The fourth proportional to 71,623.20, 107,434.80 and 38,445.60 is: 57,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,623.20 : 107,434.80 = 38,445.60 : x
  2. Step 2: Convert to fraction form
    71,623.20/107,434.80 = 38,445.60/x
  3. Step 3: Cross multiply
    71,623.20x = 107,434.80 × 38,445.60
  4. Step 4: Simplify right side
    71,623.20x = 4,130,395,346.88
  5. Step 5: Solve for x
    x = 4,130,395,346.88/71,623.20
  6. Step 6: Final answer
    x = 57,668.40

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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.