Home / 91,603.23-137,398.27-28,421.73

Finding the Fourth Proportional to 91,603.23, 137,398.27 and 28,421.73

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Solution

The fourth proportional to 91,603.23, 137,398.27 and 28,421.73 is: 42,630.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,603.23 : 137,398.27 = 28,421.73 : x
  2. Step 2: Convert to fraction form
    91,603.23/137,398.27 = 28,421.73/x
  3. Step 3: Cross multiply
    91,603.23x = 137,398.27 × 28,421.73
  4. Step 4: Simplify right side
    91,603.23x = 3,905,096,532.41
  5. Step 5: Solve for x
    x = 3,905,096,532.41/91,603.23
  6. Step 6: Final answer
    x = 42,630.55

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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.