Home / 57,021.44-78,689.09-31,528.46

Finding the Fourth Proportional to 57,021.44, 78,689.09 and 31,528.46

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Solution

The fourth proportional to 57,021.44, 78,689.09 and 31,528.46 is: 43,509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021.44 : 78,689.09 = 31,528.46 : x
  2. Step 2: Convert to fraction form
    57,021.44/78,689.09 = 31,528.46/x
  3. Step 3: Cross multiply
    57,021.44x = 78,689.09 × 31,528.46
  4. Step 4: Simplify right side
    57,021.44x = 2,480,946,102.05
  5. Step 5: Solve for x
    x = 2,480,946,102.05/57,021.44
  6. Step 6: Final answer
    x = 43,509.01

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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.