Home / 42,137.20-63,205.80-38,929.60

Finding the Fourth Proportional to 42,137.20, 63,205.80 and 38,929.60

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Solution

The fourth proportional to 42,137.20, 63,205.80 and 38,929.60 is: 58,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,137.20 : 63,205.80 = 38,929.60 : x
  2. Step 2: Convert to fraction form
    42,137.20/63,205.80 = 38,929.60/x
  3. Step 3: Cross multiply
    42,137.20x = 63,205.80 × 38,929.60
  4. Step 4: Simplify right side
    42,137.20x = 2,460,576,511.68
  5. Step 5: Solve for x
    x = 2,460,576,511.68/42,137.20
  6. Step 6: Final answer
    x = 58,394.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.