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Finding the Fourth Proportional to 58,878.25, 81,210.81 and 38,728.69

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Solution

The fourth proportional to 58,878.25, 81,210.81 and 38,728.69 is: 53,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,878.25 : 81,210.81 = 38,728.69 : x
  2. Step 2: Convert to fraction form
    58,878.25/81,210.81 = 38,728.69/x
  3. Step 3: Cross multiply
    58,878.25x = 81,210.81 × 38,728.69
  4. Step 4: Simplify right side
    58,878.25x = 3,145,188,285.14
  5. Step 5: Solve for x
    x = 3,145,188,285.14/58,878.25
  6. Step 6: Final answer
    x = 53,418.51

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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.