Home / 57,069.60-78,577.12-51,820.80

Finding the Fourth Proportional to 57,069.60, 78,577.12 and 51,820.80

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Solution

The fourth proportional to 57,069.60, 78,577.12 and 51,820.80 is: 71,350.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,069.60 : 78,577.12 = 51,820.80 : x
  2. Step 2: Convert to fraction form
    57,069.60/78,577.12 = 51,820.80/x
  3. Step 3: Cross multiply
    57,069.60x = 78,577.12 × 51,820.80
  4. Step 4: Simplify right side
    57,069.60x = 4,071,929,220.10
  5. Step 5: Solve for x
    x = 4,071,929,220.10/57,069.60
  6. Step 6: Final answer
    x = 71,350.23

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1.5x scale

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.