Home / 78,783.45-118,087.38-41,347.77

Finding the Fourth Proportional to 78,783.45, 118,087.38 and 41,347.77

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Solution

The fourth proportional to 78,783.45, 118,087.38 and 41,347.77 is: 61,975.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.45 : 118,087.38 = 41,347.77 : x
  2. Step 2: Convert to fraction form
    78,783.45/118,087.38 = 41,347.77/x
  3. Step 3: Cross multiply
    78,783.45x = 118,087.38 × 41,347.77
  4. Step 4: Simplify right side
    78,783.45x = 4,882,649,828.14
  5. Step 5: Solve for x
    x = 4,882,649,828.14/78,783.45
  6. Step 6: Final answer
    x = 61,975.58

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1.5x scale

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.