Home / 71,764.72-99,026.40-39,931.36

Finding the Fourth Proportional to 71,764.72, 99,026.40 and 39,931.36

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Solution

The fourth proportional to 71,764.72, 99,026.40 and 39,931.36 is: 55,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,764.72 : 99,026.40 = 39,931.36 : x
  2. Step 2: Convert to fraction form
    71,764.72/99,026.40 = 39,931.36/x
  3. Step 3: Cross multiply
    71,764.72x = 99,026.40 × 39,931.36
  4. Step 4: Simplify right side
    71,764.72x = 3,954,258,827.90
  5. Step 5: Solve for x
    x = 3,954,258,827.90/71,764.72
  6. Step 6: Final answer
    x = 55,100.32

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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.