Home / 76,779.36-105,872.64-48,088.80

Finding the Fourth Proportional to 76,779.36, 105,872.64 and 48,088.80

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Solution

The fourth proportional to 76,779.36, 105,872.64 and 48,088.80 is: 66,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,779.36 : 105,872.64 = 48,088.80 : x
  2. Step 2: Convert to fraction form
    76,779.36/105,872.64 = 48,088.80/x
  3. Step 3: Cross multiply
    76,779.36x = 105,872.64 × 48,088.80
  4. Step 4: Simplify right side
    76,779.36x = 5,091,288,210.43
  5. Step 5: Solve for x
    x = 5,091,288,210.43/76,779.36
  6. Step 6: Final answer
    x = 66,310.64

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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.