Home / 105,287.91-145,307.31-57,548.43

Finding the Fourth Proportional to 105,287.91, 145,307.31 and 57,548.43

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Solution

The fourth proportional to 105,287.91, 145,307.31 and 57,548.43 is: 79,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,287.91 : 145,307.31 = 57,548.43 : x
  2. Step 2: Convert to fraction form
    105,287.91/145,307.31 = 57,548.43/x
  3. Step 3: Cross multiply
    105,287.91x = 145,307.31 × 57,548.43
  4. Step 4: Simplify right side
    105,287.91x = 8,362,207,558.02
  5. Step 5: Solve for x
    x = 8,362,207,558.02/105,287.91
  6. Step 6: Final answer
    x = 79,422.30

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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.