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Finding the Fourth Proportional to 78,575.99, 117,875.03 and 25,250.09

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Solution

The fourth proportional to 78,575.99, 117,875.03 and 25,250.09 is: 37,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,575.99 : 117,875.03 = 25,250.09 : x
  2. Step 2: Convert to fraction form
    78,575.99/117,875.03 = 25,250.09/x
  3. Step 3: Cross multiply
    78,575.99x = 117,875.03 × 25,250.09
  4. Step 4: Simplify right side
    78,575.99x = 2,976,354,400.63
  5. Step 5: Solve for x
    x = 2,976,354,400.63/78,575.99
  6. Step 6: Final answer
    x = 37,878.68

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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.