Home / 52,837.20-72,915-28,965.36

Finding the Fourth Proportional to 52,837.20, 72,915 and 28,965.36

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Solution

The fourth proportional to 52,837.20, 72,915 and 28,965.36 is: 39,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,837.20 : 72,915 = 28,965.36 : x
  2. Step 2: Convert to fraction form
    52,837.20/72,915 = 28,965.36/x
  3. Step 3: Cross multiply
    52,837.20x = 72,915 × 28,965.36
  4. Step 4: Simplify right side
    52,837.20x = 2,112,009,224.40
  5. Step 5: Solve for x
    x = 2,112,009,224.40/52,837.20
  6. Step 6: Final answer
    x = 39,972.01

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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.