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Finding the Fourth Proportional to 75,014.48, 112,422.36 and 39,878.48

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Solution

The fourth proportional to 75,014.48, 112,422.36 and 39,878.48 is: 59,764.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,014.48 : 112,422.36 = 39,878.48 : x
  2. Step 2: Convert to fraction form
    75,014.48/112,422.36 = 39,878.48/x
  3. Step 3: Cross multiply
    75,014.48x = 112,422.36 × 39,878.48
  4. Step 4: Simplify right side
    75,014.48x = 4,483,232,834.81
  5. Step 5: Solve for x
    x = 4,483,232,834.81/75,014.48
  6. Step 6: Final answer
    x = 59,764.90

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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.