Home / 42,100.80-63,005.40-38,601.60

Finding the Fourth Proportional to 42,100.80, 63,005.40 and 38,601.60

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Solution

The fourth proportional to 42,100.80, 63,005.40 and 38,601.60 is: 57,768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,100.80 : 63,005.40 = 38,601.60 : x
  2. Step 2: Convert to fraction form
    42,100.80/63,005.40 = 38,601.60/x
  3. Step 3: Cross multiply
    42,100.80x = 63,005.40 × 38,601.60
  4. Step 4: Simplify right side
    42,100.80x = 2,432,109,248.64
  5. Step 5: Solve for x
    x = 2,432,109,248.64/42,100.80
  6. Step 6: Final answer
    x = 57,768.72

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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.