Home / 82,779.28-124,199.16-51,640.72

Finding the Fourth Proportional to 82,779.28, 124,199.16 and 51,640.72

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Solution

The fourth proportional to 82,779.28, 124,199.16 and 51,640.72 is: 77,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,779.28 : 124,199.16 = 51,640.72 : x
  2. Step 2: Convert to fraction form
    82,779.28/124,199.16 = 51,640.72/x
  3. Step 3: Cross multiply
    82,779.28x = 124,199.16 × 51,640.72
  4. Step 4: Simplify right side
    82,779.28x = 6,413,734,045.80
  5. Step 5: Solve for x
    x = 6,413,734,045.80/82,779.28
  6. Step 6: Final answer
    x = 77,479.94

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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.