Home / 72,927.56-109,409.79-20,337.05

Finding the Fourth Proportional to 72,927.56, 109,409.79 and 20,337.05

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Solution

The fourth proportional to 72,927.56, 109,409.79 and 20,337.05 is: 30,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,927.56 : 109,409.79 = 20,337.05 : x
  2. Step 2: Convert to fraction form
    72,927.56/109,409.79 = 20,337.05/x
  3. Step 3: Cross multiply
    72,927.56x = 109,409.79 × 20,337.05
  4. Step 4: Simplify right side
    72,927.56x = 2,225,072,719.51
  5. Step 5: Solve for x
    x = 2,225,072,719.51/72,927.56
  6. Step 6: Final answer
    x = 30,510.72

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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.