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Finding the Fourth Proportional to 105,699.52, 145,863.42 and 57,953.08

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Solution

The fourth proportional to 105,699.52, 145,863.42 and 57,953.08 is: 79,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,699.52 : 145,863.42 = 57,953.08 : x
  2. Step 2: Convert to fraction form
    105,699.52/145,863.42 = 57,953.08/x
  3. Step 3: Cross multiply
    105,699.52x = 145,863.42 × 57,953.08
  4. Step 4: Simplify right side
    105,699.52x = 8,453,234,448.33
  5. Step 5: Solve for x
    x = 8,453,234,448.33/105,699.52
  6. Step 6: Final answer
    x = 79,974.20

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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.