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Finding the Fourth Proportional to 84,621, 116,788.62 and 48,810.21

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Solution

The fourth proportional to 84,621, 116,788.62 and 48,810.21 is: 67,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,621 : 116,788.62 = 48,810.21 : x
  2. Step 2: Convert to fraction form
    84,621/116,788.62 = 48,810.21/x
  3. Step 3: Cross multiply
    84,621x = 116,788.62 × 48,810.21
  4. Step 4: Simplify right side
    84,621x = 5,700,477,067.81
  5. Step 5: Solve for x
    x = 5,700,477,067.81/84,621
  6. Step 6: Final answer
    x = 67,364.80

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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.