Home / 81,329.13-112,208.63-45,513.45

Finding the Fourth Proportional to 81,329.13, 112,208.63 and 45,513.45

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Solution

The fourth proportional to 81,329.13, 112,208.63 and 45,513.45 is: 62,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,329.13 : 112,208.63 = 45,513.45 : x
  2. Step 2: Convert to fraction form
    81,329.13/112,208.63 = 45,513.45/x
  3. Step 3: Cross multiply
    81,329.13x = 112,208.63 × 45,513.45
  4. Step 4: Simplify right side
    81,329.13x = 5,107,001,643.51
  5. Step 5: Solve for x
    x = 5,107,001,643.51/81,329.13
  6. Step 6: Final answer
    x = 62,794.25

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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.