Home / 75,420.86-113,178.98-42,162.76

Finding the Fourth Proportional to 75,420.86, 113,178.98 and 42,162.76

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Solution

The fourth proportional to 75,420.86, 113,178.98 and 42,162.76 is: 63,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,420.86 : 113,178.98 = 42,162.76 : x
  2. Step 2: Convert to fraction form
    75,420.86/113,178.98 = 42,162.76/x
  3. Step 3: Cross multiply
    75,420.86x = 113,178.98 × 42,162.76
  4. Step 4: Simplify right side
    75,420.86x = 4,771,938,170.78
  5. Step 5: Solve for x
    x = 4,771,938,170.78/75,420.86
  6. Step 6: Final answer
    x = 63,270.80

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1.5x scale

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.