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Finding the Fourth Proportional to 86,885, 119,873.41 and 48,638.91

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Solution

The fourth proportional to 86,885, 119,873.41 and 48,638.91 is: 67,106.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,885 : 119,873.41 = 48,638.91 : x
  2. Step 2: Convert to fraction form
    86,885/119,873.41 = 48,638.91/x
  3. Step 3: Cross multiply
    86,885x = 119,873.41 × 48,638.91
  4. Step 4: Simplify right side
    86,885x = 5,830,512,000.38
  5. Step 5: Solve for x
    x = 5,830,512,000.38/86,885
  6. Step 6: Final answer
    x = 67,106.08

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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.