Home / 64,780.41-97,165.93-20,419.86

Finding the Fourth Proportional to 64,780.41, 97,165.93 and 20,419.86

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Solution

The fourth proportional to 64,780.41, 97,165.93 and 20,419.86 is: 30,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,780.41 : 97,165.93 = 20,419.86 : x
  2. Step 2: Convert to fraction form
    64,780.41/97,165.93 = 20,419.86/x
  3. Step 3: Cross multiply
    64,780.41x = 97,165.93 × 20,419.86
  4. Step 4: Simplify right side
    64,780.41x = 1,984,114,636.32
  5. Step 5: Solve for x
    x = 1,984,114,636.32/64,780.41
  6. Step 6: Final answer
    x = 30,628.31

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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.