Home / 57,329.20-85,823.70-42,603.40

Finding the Fourth Proportional to 57,329.20, 85,823.70 and 42,603.40

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Solution

The fourth proportional to 57,329.20, 85,823.70 and 42,603.40 is: 63,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,329.20 : 85,823.70 = 42,603.40 : x
  2. Step 2: Convert to fraction form
    57,329.20/85,823.70 = 42,603.40/x
  3. Step 3: Cross multiply
    57,329.20x = 85,823.70 × 42,603.40
  4. Step 4: Simplify right side
    57,329.20x = 3,656,381,420.58
  5. Step 5: Solve for x
    x = 3,656,381,420.58/57,329.20
  6. Step 6: Final answer
    x = 63,778.69

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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.