Home / 51,405.60-77,108.40-39,727.20

Finding the Fourth Proportional to 51,405.60, 77,108.40 and 39,727.20

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Solution

The fourth proportional to 51,405.60, 77,108.40 and 39,727.20 is: 59,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.60 : 77,108.40 = 39,727.20 : x
  2. Step 2: Convert to fraction form
    51,405.60/77,108.40 = 39,727.20/x
  3. Step 3: Cross multiply
    51,405.60x = 77,108.40 × 39,727.20
  4. Step 4: Simplify right side
    51,405.60x = 3,063,300,828.48
  5. Step 5: Solve for x
    x = 3,063,300,828.48/51,405.60
  6. Step 6: Final answer
    x = 59,590.80

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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.