Home / 39,931.90-55,071.03-31,971.22

Finding the Fourth Proportional to 39,931.90, 55,071.03 and 31,971.22

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Solution

The fourth proportional to 39,931.90, 55,071.03 and 31,971.22 is: 44,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,931.90 : 55,071.03 = 31,971.22 : x
  2. Step 2: Convert to fraction form
    39,931.90/55,071.03 = 31,971.22/x
  3. Step 3: Cross multiply
    39,931.90x = 55,071.03 × 31,971.22
  4. Step 4: Simplify right side
    39,931.90x = 1,760,688,015.76
  5. Step 5: Solve for x
    x = 1,760,688,015.76/39,931.90
  6. Step 6: Final answer
    x = 44,092.27

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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.