Home / 99,478.10-137,292.90-57,028.44

Finding the Fourth Proportional to 99,478.10, 137,292.90 and 57,028.44

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Solution

The fourth proportional to 99,478.10, 137,292.90 and 57,028.44 is: 78,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,478.10 : 137,292.90 = 57,028.44 : x
  2. Step 2: Convert to fraction form
    99,478.10/137,292.90 = 57,028.44/x
  3. Step 3: Cross multiply
    99,478.10x = 137,292.90 × 57,028.44
  4. Step 4: Simplify right side
    99,478.10x = 7,829,599,910.08
  5. Step 5: Solve for x
    x = 7,829,599,910.08/99,478.10
  6. Step 6: Final answer
    x = 78,706.77

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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.