Home / 85,721.65-118,353.69-53,505.35

Finding the Fourth Proportional to 85,721.65, 118,353.69 and 53,505.35

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Solution

The fourth proportional to 85,721.65, 118,353.69 and 53,505.35 is: 73,873.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.65 : 118,353.69 = 53,505.35 : x
  2. Step 2: Convert to fraction form
    85,721.65/118,353.69 = 53,505.35/x
  3. Step 3: Cross multiply
    85,721.65x = 118,353.69 × 53,505.35
  4. Step 4: Simplify right side
    85,721.65x = 6,332,555,607.24
  5. Step 5: Solve for x
    x = 6,332,555,607.24/85,721.65
  6. Step 6: Final answer
    x = 73,873.47

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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.