Home / 105,392.14-145,442.31-57,644.47

Finding the Fourth Proportional to 105,392.14, 145,442.31 and 57,644.47

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Solution

The fourth proportional to 105,392.14, 145,442.31 and 57,644.47 is: 79,550.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.14 : 145,442.31 = 57,644.47 : x
  2. Step 2: Convert to fraction form
    105,392.14/145,442.31 = 57,644.47/x
  3. Step 3: Cross multiply
    105,392.14x = 145,442.31 × 57,644.47
  4. Step 4: Simplify right side
    105,392.14x = 8,383,944,875.53
  5. Step 5: Solve for x
    x = 8,383,944,875.53/105,392.14
  6. Step 6: Final answer
    x = 79,550.00

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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.