Home / 67,009.12-100,498.33-39,999.09

Finding the Fourth Proportional to 67,009.12, 100,498.33 and 39,999.09

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Solution

The fourth proportional to 67,009.12, 100,498.33 and 39,999.09 is: 59,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,009.12 : 100,498.33 = 39,999.09 : x
  2. Step 2: Convert to fraction form
    67,009.12/100,498.33 = 39,999.09/x
  3. Step 3: Cross multiply
    67,009.12x = 100,498.33 × 39,999.09
  4. Step 4: Simplify right side
    67,009.12x = 4,019,841,746.52
  5. Step 5: Solve for x
    x = 4,019,841,746.52/67,009.12
  6. Step 6: Final answer
    x = 59,989.47

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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.