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Finding the Fourth Proportional to 75,877.62, 113,873.34 and 28,539.30

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Solution

The fourth proportional to 75,877.62, 113,873.34 and 28,539.30 is: 42,830.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,877.62 : 113,873.34 = 28,539.30 : x
  2. Step 2: Convert to fraction form
    75,877.62/113,873.34 = 28,539.30/x
  3. Step 3: Cross multiply
    75,877.62x = 113,873.34 × 28,539.30
  4. Step 4: Simplify right side
    75,877.62x = 3,249,865,412.26
  5. Step 5: Solve for x
    x = 3,249,865,412.26/75,877.62
  6. Step 6: Final answer
    x = 42,830.36

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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.