Home / 105,710.08-158,518.98-40,000

Finding the Fourth Proportional to 105,710.08, 158,518.98 and 40,000

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Solution

The fourth proportional to 105,710.08, 158,518.98 and 40,000 is: 59,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,710.08 : 158,518.98 = 40,000 : x
  2. Step 2: Convert to fraction form
    105,710.08/158,518.98 = 40,000/x
  3. Step 3: Cross multiply
    105,710.08x = 158,518.98 × 40,000
  4. Step 4: Simplify right side
    105,710.08x = 6,340,759,200
  5. Step 5: Solve for x
    x = 6,340,759,200/105,710.08
  6. Step 6: Final answer
    x = 59,982.54

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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.