Home / 78,661.51-118,585.24-73,587.67

Finding the Fourth Proportional to 78,661.51, 118,585.24 and 73,587.67

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Solution

The fourth proportional to 78,661.51, 118,585.24 and 73,587.67 is: 110,936.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,661.51 : 118,585.24 = 73,587.67 : x
  2. Step 2: Convert to fraction form
    78,661.51/118,585.24 = 73,587.67/x
  3. Step 3: Cross multiply
    78,661.51x = 118,585.24 × 73,587.67
  4. Step 4: Simplify right side
    78,661.51x = 8,726,411,027.56
  5. Step 5: Solve for x
    x = 8,726,411,027.56/78,661.51
  6. Step 6: Final answer
    x = 110,936.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.