Home / 51,637.60-77,456.40-39,959.20

Finding the Fourth Proportional to 51,637.60, 77,456.40 and 39,959.20

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Solution

The fourth proportional to 51,637.60, 77,456.40 and 39,959.20 is: 59,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,637.60 : 77,456.40 = 39,959.20 : x
  2. Step 2: Convert to fraction form
    51,637.60/77,456.40 = 39,959.20/x
  3. Step 3: Cross multiply
    51,637.60x = 77,456.40 × 39,959.20
  4. Step 4: Simplify right side
    51,637.60x = 3,095,095,778.88
  5. Step 5: Solve for x
    x = 3,095,095,778.88/51,637.60
  6. Step 6: Final answer
    x = 59,938.80

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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.