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Finding the Fourth Proportional to 61,630.72, 85,048.40 and 38,982.08

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Solution

The fourth proportional to 61,630.72, 85,048.40 and 38,982.08 is: 53,794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,630.72 : 85,048.40 = 38,982.08 : x
  2. Step 2: Convert to fraction form
    61,630.72/85,048.40 = 38,982.08/x
  3. Step 3: Cross multiply
    61,630.72x = 85,048.40 × 38,982.08
  4. Step 4: Simplify right side
    61,630.72x = 3,315,363,532.67
  5. Step 5: Solve for x
    x = 3,315,363,532.67/61,630.72
  6. Step 6: Final answer
    x = 53,794.01

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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.