Home / 43,825.60-65,738.40-28,079.20

Finding the Fourth Proportional to 43,825.60, 65,738.40 and 28,079.20

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Solution

The fourth proportional to 43,825.60, 65,738.40 and 28,079.20 is: 42,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,825.60 : 65,738.40 = 28,079.20 : x
  2. Step 2: Convert to fraction form
    43,825.60/65,738.40 = 28,079.20/x
  3. Step 3: Cross multiply
    43,825.60x = 65,738.40 × 28,079.20
  4. Step 4: Simplify right side
    43,825.60x = 1,845,881,681.28
  5. Step 5: Solve for x
    x = 1,845,881,681.28/43,825.60
  6. Step 6: Final answer
    x = 42,118.80

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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.