Home / 79,915.24-119,873.09-20,751.40

Finding the Fourth Proportional to 79,915.24, 119,873.09 and 20,751.40

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Solution

The fourth proportional to 79,915.24, 119,873.09 and 20,751.40 is: 31,127.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,915.24 : 119,873.09 = 20,751.40 : x
  2. Step 2: Convert to fraction form
    79,915.24/119,873.09 = 20,751.40/x
  3. Step 3: Cross multiply
    79,915.24x = 119,873.09 × 20,751.40
  4. Step 4: Simplify right side
    79,915.24x = 2,487,534,439.83
  5. Step 5: Solve for x
    x = 2,487,534,439.83/79,915.24
  6. Step 6: Final answer
    x = 31,127.16

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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.