Home / 89,123.50-122,990.43-53,315.02

Finding the Fourth Proportional to 89,123.50, 122,990.43 and 53,315.02

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Solution

The fourth proportional to 89,123.50, 122,990.43 and 53,315.02 is: 73,574.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,123.50 : 122,990.43 = 53,315.02 : x
  2. Step 2: Convert to fraction form
    89,123.50/122,990.43 = 53,315.02/x
  3. Step 3: Cross multiply
    89,123.50x = 122,990.43 × 53,315.02
  4. Step 4: Simplify right side
    89,123.50x = 6,557,237,235.26
  5. Step 5: Solve for x
    x = 6,557,237,235.26/89,123.50
  6. Step 6: Final answer
    x = 73,574.73

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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.