Home / 78,448.07-117,635.15-28,492.94

Finding the Fourth Proportional to 78,448.07, 117,635.15 and 28,492.94

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Solution

The fourth proportional to 78,448.07, 117,635.15 and 28,492.94 is: 42,725.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,448.07 : 117,635.15 = 28,492.94 : x
  2. Step 2: Convert to fraction form
    78,448.07/117,635.15 = 28,492.94/x
  3. Step 3: Cross multiply
    78,448.07x = 117,635.15 × 28,492.94
  4. Step 4: Simplify right side
    78,448.07x = 3,351,771,270.84
  5. Step 5: Solve for x
    x = 3,351,771,270.84/78,448.07
  6. Step 6: Final answer
    x = 42,725.99

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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.