Home / 79,427.28-109,611.48-45,438.96

Finding the Fourth Proportional to 79,427.28, 109,611.48 and 45,438.96

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Solution

The fourth proportional to 79,427.28, 109,611.48 and 45,438.96 is: 62,706.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,427.28 : 109,611.48 = 45,438.96 : x
  2. Step 2: Convert to fraction form
    79,427.28/109,611.48 = 45,438.96/x
  3. Step 3: Cross multiply
    79,427.28x = 109,611.48 × 45,438.96
  4. Step 4: Simplify right side
    79,427.28x = 4,980,631,655.26
  5. Step 5: Solve for x
    x = 4,980,631,655.26/79,427.28
  6. Step 6: Final answer
    x = 62,706.81

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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.