Home / 51,788.75-77,612.25-39,128.10

Finding the Fourth Proportional to 51,788.75, 77,612.25 and 39,128.10

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Solution

The fourth proportional to 51,788.75, 77,612.25 and 39,128.10 is: 58,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,788.75 : 77,612.25 = 39,128.10 : x
  2. Step 2: Convert to fraction form
    51,788.75/77,612.25 = 39,128.10/x
  3. Step 3: Cross multiply
    51,788.75x = 77,612.25 × 39,128.10
  4. Step 4: Simplify right side
    51,788.75x = 3,036,820,025.96
  5. Step 5: Solve for x
    x = 3,036,820,025.96/51,788.75
  6. Step 6: Final answer
    x = 58,638.60

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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.