Home / 76,816.85-105,998.69-42,822.77

Finding the Fourth Proportional to 76,816.85, 105,998.69 and 42,822.77

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Solution

The fourth proportional to 76,816.85, 105,998.69 and 42,822.77 is: 59,090.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,816.85 : 105,998.69 = 42,822.77 : x
  2. Step 2: Convert to fraction form
    76,816.85/105,998.69 = 42,822.77/x
  3. Step 3: Cross multiply
    76,816.85x = 105,998.69 × 42,822.77
  4. Step 4: Simplify right side
    76,816.85x = 4,539,156,778.06
  5. Step 5: Solve for x
    x = 4,539,156,778.06/76,816.85
  6. Step 6: Final answer
    x = 59,090.64

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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.