Home / 79,231.32-109,312.07-45,215.25

Finding the Fourth Proportional to 79,231.32, 109,312.07 and 45,215.25

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Solution

The fourth proportional to 79,231.32, 109,312.07 and 45,215.25 is: 62,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231.32 : 109,312.07 = 45,215.25 : x
  2. Step 2: Convert to fraction form
    79,231.32/109,312.07 = 45,215.25/x
  3. Step 3: Cross multiply
    79,231.32x = 109,312.07 × 45,215.25
  4. Step 4: Simplify right side
    79,231.32x = 4,942,572,346.99
  5. Step 5: Solve for x
    x = 4,942,572,346.99/79,231.32
  6. Step 6: Final answer
    x = 62,381.55

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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.