Home / 52,865.36-72,955.20-28,990.60

Finding the Fourth Proportional to 52,865.36, 72,955.20 and 28,990.60

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Solution

The fourth proportional to 52,865.36, 72,955.20 and 28,990.60 is: 40,007.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,865.36 : 72,955.20 = 28,990.60 : x
  2. Step 2: Convert to fraction form
    52,865.36/72,955.20 = 28,990.60/x
  3. Step 3: Cross multiply
    52,865.36x = 72,955.20 × 28,990.60
  4. Step 4: Simplify right side
    52,865.36x = 2,115,015,021.12
  5. Step 5: Solve for x
    x = 2,115,015,021.12/52,865.36
  6. Step 6: Final answer
    x = 40,007.58

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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.