Home / 85,070.13-117,403.55-49,260.77

Finding the Fourth Proportional to 85,070.13, 117,403.55 and 49,260.77

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Solution

The fourth proportional to 85,070.13, 117,403.55 and 49,260.77 is: 67,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.13 : 117,403.55 = 49,260.77 : x
  2. Step 2: Convert to fraction form
    85,070.13/117,403.55 = 49,260.77/x
  3. Step 3: Cross multiply
    85,070.13x = 117,403.55 × 49,260.77
  4. Step 4: Simplify right side
    85,070.13x = 5,783,388,686.72
  5. Step 5: Solve for x
    x = 5,783,388,686.72/85,070.13
  6. Step 6: Final answer
    x = 67,983.78

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1.5x scale

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.