Home / 70,129.35-105,246.27-51,457.63

Finding the Fourth Proportional to 70,129.35, 105,246.27 and 51,457.63

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Solution

The fourth proportional to 70,129.35, 105,246.27 and 51,457.63 is: 77,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.35 : 105,246.27 = 51,457.63 : x
  2. Step 2: Convert to fraction form
    70,129.35/105,246.27 = 51,457.63/x
  3. Step 3: Cross multiply
    70,129.35x = 105,246.27 × 51,457.63
  4. Step 4: Simplify right side
    70,129.35x = 5,415,723,363.25
  5. Step 5: Solve for x
    x = 5,415,723,363.25/70,129.35
  6. Step 6: Final answer
    x = 77,224.78

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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.