Home / 70,207.36-105,311.18-20,291.47

Finding the Fourth Proportional to 70,207.36, 105,311.18 and 20,291.47

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Solution

The fourth proportional to 70,207.36, 105,311.18 and 20,291.47 is: 30,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,207.36 : 105,311.18 = 20,291.47 : x
  2. Step 2: Convert to fraction form
    70,207.36/105,311.18 = 20,291.47/x
  3. Step 3: Cross multiply
    70,207.36x = 105,311.18 × 20,291.47
  4. Step 4: Simplify right side
    70,207.36x = 2,136,919,028.78
  5. Step 5: Solve for x
    x = 2,136,919,028.78/70,207.36
  6. Step 6: Final answer
    x = 30,437.25

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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.