Home / 40,989.75-61,444.67-20,999.22

Finding the Fourth Proportional to 40,989.75, 61,444.67 and 20,999.22

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Solution

The fourth proportional to 40,989.75, 61,444.67 and 20,999.22 is: 31,478.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,989.75 : 61,444.67 = 20,999.22 : x
  2. Step 2: Convert to fraction form
    40,989.75/61,444.67 = 20,999.22/x
  3. Step 3: Cross multiply
    40,989.75x = 61,444.67 × 20,999.22
  4. Step 4: Simplify right side
    40,989.75x = 1,290,290,038.16
  5. Step 5: Solve for x
    x = 1,290,290,038.16/40,989.75
  6. Step 6: Final answer
    x = 31,478.36

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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.