Home / 89,123.25-122,990.09-53,314.77

Finding the Fourth Proportional to 89,123.25, 122,990.09 and 53,314.77

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Solution

The fourth proportional to 89,123.25, 122,990.09 and 53,314.77 is: 73,574.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,123.25 : 122,990.09 = 53,314.77 : x
  2. Step 2: Convert to fraction form
    89,123.25/122,990.09 = 53,314.77/x
  3. Step 3: Cross multiply
    89,123.25x = 122,990.09 × 53,314.77
  4. Step 4: Simplify right side
    89,123.25x = 6,557,188,094.06
  5. Step 5: Solve for x
    x = 6,557,188,094.06/89,123.25
  6. Step 6: Final answer
    x = 73,574.38

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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.