Home / 70,256.51-105,390.27-20,337.36

Finding the Fourth Proportional to 70,256.51, 105,390.27 and 20,337.36

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Solution

The fourth proportional to 70,256.51, 105,390.27 and 20,337.36 is: 30,507.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,256.51 : 105,390.27 = 20,337.36 : x
  2. Step 2: Convert to fraction form
    70,256.51/105,390.27 = 20,337.36/x
  3. Step 3: Cross multiply
    70,256.51x = 105,390.27 × 20,337.36
  4. Step 4: Simplify right side
    70,256.51x = 2,143,359,861.49
  5. Step 5: Solve for x
    x = 2,143,359,861.49/70,256.51
  6. Step 6: Final answer
    x = 30,507.63

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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.