Home / 78,848.56-118,210-45,530.80

Finding the Fourth Proportional to 78,848.56, 118,210 and 45,530.80

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Solution

The fourth proportional to 78,848.56, 118,210 and 45,530.80 is: 68,259.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,848.56 : 118,210 = 45,530.80 : x
  2. Step 2: Convert to fraction form
    78,848.56/118,210 = 45,530.80/x
  3. Step 3: Cross multiply
    78,848.56x = 118,210 × 45,530.80
  4. Step 4: Simplify right side
    78,848.56x = 5,382,195,868
  5. Step 5: Solve for x
    x = 5,382,195,868/78,848.56
  6. Step 6: Final answer
    x = 68,259.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.