Home / 81,693.21-112,743.45-45,890.40

Finding the Fourth Proportional to 81,693.21, 112,743.45 and 45,890.40

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Solution

The fourth proportional to 81,693.21, 112,743.45 and 45,890.40 is: 63,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,693.21 : 112,743.45 = 45,890.40 : x
  2. Step 2: Convert to fraction form
    81,693.21/112,743.45 = 45,890.40/x
  3. Step 3: Cross multiply
    81,693.21x = 112,743.45 × 45,890.40
  4. Step 4: Simplify right side
    81,693.21x = 5,173,842,017.88
  5. Step 5: Solve for x
    x = 5,173,842,017.88/81,693.21
  6. Step 6: Final answer
    x = 63,332.58

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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.