Home / 105,653.76-145,804.16-57,904

Finding the Fourth Proportional to 105,653.76, 145,804.16 and 57,904

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Solution

The fourth proportional to 105,653.76, 145,804.16 and 57,904 is: 79,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,653.76 : 145,804.16 = 57,904 : x
  2. Step 2: Convert to fraction form
    105,653.76/145,804.16 = 57,904/x
  3. Step 3: Cross multiply
    105,653.76x = 145,804.16 × 57,904
  4. Step 4: Simplify right side
    105,653.76x = 8,442,644,080.64
  5. Step 5: Solve for x
    x = 8,442,644,080.64/105,653.76
  6. Step 6: Final answer
    x = 79,908.60

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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.