Home / 66,420.86-99,490.77-53,716.10

Finding the Fourth Proportional to 66,420.86, 99,490.77 and 53,716.10

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Solution

The fourth proportional to 66,420.86, 99,490.77 and 53,716.10 is: 80,460.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.86 : 99,490.77 = 53,716.10 : x
  2. Step 2: Convert to fraction form
    66,420.86/99,490.77 = 53,716.10/x
  3. Step 3: Cross multiply
    66,420.86x = 99,490.77 × 53,716.10
  4. Step 4: Simplify right side
    66,420.86x = 5,344,255,652.94
  5. Step 5: Solve for x
    x = 5,344,255,652.94/66,420.86
  6. Step 6: Final answer
    x = 80,460.51

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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.