Home / 105,464.73-145,541.70-57,718.47

Finding the Fourth Proportional to 105,464.73, 145,541.70 and 57,718.47

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Solution

The fourth proportional to 105,464.73, 145,541.70 and 57,718.47 is: 79,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,464.73 : 145,541.70 = 57,718.47 : x
  2. Step 2: Convert to fraction form
    105,464.73/145,541.70 = 57,718.47/x
  3. Step 3: Cross multiply
    105,464.73x = 145,541.70 × 57,718.47
  4. Step 4: Simplify right side
    105,464.73x = 8,400,444,245.20
  5. Step 5: Solve for x
    x = 8,400,444,245.20/105,464.73
  6. Step 6: Final answer
    x = 79,651.69

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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.