Home / 105,455.47-145,525.87-62,435.51

Finding the Fourth Proportional to 105,455.47, 145,525.87 and 62,435.51

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Solution

The fourth proportional to 105,455.47, 145,525.87 and 62,435.51 is: 86,159.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.47 : 145,525.87 = 62,435.51 : x
  2. Step 2: Convert to fraction form
    105,455.47/145,525.87 = 62,435.51/x
  3. Step 3: Cross multiply
    105,455.47x = 145,525.87 × 62,435.51
  4. Step 4: Simplify right side
    105,455.47x = 9,085,981,456.58
  5. Step 5: Solve for x
    x = 9,085,981,456.58/105,455.47
  6. Step 6: Final answer
    x = 86,159.41

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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.