Home / 47,123.22-65,041.53-28,978.41

Finding the Fourth Proportional to 47,123.22, 65,041.53 and 28,978.41

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Solution

The fourth proportional to 47,123.22, 65,041.53 and 28,978.41 is: 39,997.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,123.22 : 65,041.53 = 28,978.41 : x
  2. Step 2: Convert to fraction form
    47,123.22/65,041.53 = 28,978.41/x
  3. Step 3: Cross multiply
    47,123.22x = 65,041.53 × 28,978.41
  4. Step 4: Simplify right side
    47,123.22x = 1,884,800,055.75
  5. Step 5: Solve for x
    x = 1,884,800,055.75/47,123.22
  6. Step 6: Final answer
    x = 39,997.27

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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.