Home / 89,039.02-122,861.79-53,221.42

Finding the Fourth Proportional to 89,039.02, 122,861.79 and 53,221.42

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Solution

The fourth proportional to 89,039.02, 122,861.79 and 53,221.42 is: 73,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.02 : 122,861.79 = 53,221.42 : x
  2. Step 2: Convert to fraction form
    89,039.02/122,861.79 = 53,221.42/x
  3. Step 3: Cross multiply
    89,039.02x = 122,861.79 × 53,221.42
  4. Step 4: Simplify right side
    89,039.02x = 6,538,878,927.54
  5. Step 5: Solve for x
    x = 6,538,878,927.54/89,039.02
  6. Step 6: Final answer
    x = 73,438.35

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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.