Home / 72,912.64-109,378.08-28,533.66

Finding the Fourth Proportional to 72,912.64, 109,378.08 and 28,533.66

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Solution

The fourth proportional to 72,912.64, 109,378.08 and 28,533.66 is: 42,804.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912.64 : 109,378.08 = 28,533.66 : x
  2. Step 2: Convert to fraction form
    72,912.64/109,378.08 = 28,533.66/x
  3. Step 3: Cross multiply
    72,912.64x = 109,378.08 × 28,533.66
  4. Step 4: Simplify right side
    72,912.64x = 3,120,956,946.17
  5. Step 5: Solve for x
    x = 3,120,956,946.17/72,912.64
  6. Step 6: Final answer
    x = 42,804.06

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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.