Home / 75,415.86-113,171.48-42,157.76

Finding the Fourth Proportional to 75,415.86, 113,171.48 and 42,157.76

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Solution

The fourth proportional to 75,415.86, 113,171.48 and 42,157.76 is: 63,263.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,415.86 : 113,171.48 = 42,157.76 : x
  2. Step 2: Convert to fraction form
    75,415.86/113,171.48 = 42,157.76/x
  3. Step 3: Cross multiply
    75,415.86x = 113,171.48 × 42,157.76
  4. Step 4: Simplify right side
    75,415.86x = 4,771,055,316.04
  5. Step 5: Solve for x
    x = 4,771,055,316.04/75,415.86
  6. Step 6: Final answer
    x = 63,263.29

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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.