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Finding the Fourth Proportional to 38,985.03, 53,771.72 and 38,401.83

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Solution

The fourth proportional to 38,985.03, 53,771.72 and 38,401.83 is: 52,967.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.03 : 53,771.72 = 38,401.83 : x
  2. Step 2: Convert to fraction form
    38,985.03/53,771.72 = 38,401.83/x
  3. Step 3: Cross multiply
    38,985.03x = 53,771.72 × 38,401.83
  4. Step 4: Simplify right side
    38,985.03x = 2,064,932,258.24
  5. Step 5: Solve for x
    x = 2,064,932,258.24/38,985.03
  6. Step 6: Final answer
    x = 52,967.31

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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.