Home / 70,126.20-96,783.30-39,905.64

Finding the Fourth Proportional to 70,126.20, 96,783.30 and 39,905.64

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Solution

The fourth proportional to 70,126.20, 96,783.30 and 39,905.64 is: 55,074.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,126.20 : 96,783.30 = 39,905.64 : x
  2. Step 2: Convert to fraction form
    70,126.20/96,783.30 = 39,905.64/x
  3. Step 3: Cross multiply
    70,126.20x = 96,783.30 × 39,905.64
  4. Step 4: Simplify right side
    70,126.20x = 3,862,199,527.81
  5. Step 5: Solve for x
    x = 3,862,199,527.81/70,126.20
  6. Step 6: Final answer
    x = 55,074.99

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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.