Home / 105,455.25-145,523.57-57,710.61

Finding the Fourth Proportional to 105,455.25, 145,523.57 and 57,710.61

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Solution

The fourth proportional to 105,455.25, 145,523.57 and 57,710.61 is: 79,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.25 : 145,523.57 = 57,710.61 : x
  2. Step 2: Convert to fraction form
    105,455.25/145,523.57 = 57,710.61/x
  3. Step 3: Cross multiply
    105,455.25x = 145,523.57 × 57,710.61
  4. Step 4: Simplify right side
    105,455.25x = 8,398,253,994.08
  5. Step 5: Solve for x
    x = 8,398,253,994.08/105,455.25
  6. Step 6: Final answer
    x = 79,638.08

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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.