Home / 105,320.12-145,344.93-57,576.02

Finding the Fourth Proportional to 105,320.12, 145,344.93 and 57,576.02

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Solution

The fourth proportional to 105,320.12, 145,344.93 and 57,576.02 is: 79,456.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,320.12 : 145,344.93 = 57,576.02 : x
  2. Step 2: Convert to fraction form
    105,320.12/145,344.93 = 57,576.02/x
  3. Step 3: Cross multiply
    105,320.12x = 145,344.93 × 57,576.02
  4. Step 4: Simplify right side
    105,320.12x = 8,368,382,596.58
  5. Step 5: Solve for x
    x = 8,368,382,596.58/105,320.12
  6. Step 6: Final answer
    x = 79,456.64

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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.