Home / 76,289.15-105,285.24-42,308.28

Finding the Fourth Proportional to 76,289.15, 105,285.24 and 42,308.28

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Solution

The fourth proportional to 76,289.15, 105,285.24 and 42,308.28 is: 58,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,289.15 : 105,285.24 = 42,308.28 : x
  2. Step 2: Convert to fraction form
    76,289.15/105,285.24 = 42,308.28/x
  3. Step 3: Cross multiply
    76,289.15x = 105,285.24 × 42,308.28
  4. Step 4: Simplify right side
    76,289.15x = 4,454,437,413.79
  5. Step 5: Solve for x
    x = 4,454,437,413.79/76,289.15
  6. Step 6: Final answer
    x = 58,388.87

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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.