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Finding the Fourth Proportional to 75,148.96, 112,772.64 and 28,401.84

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Solution

The fourth proportional to 75,148.96, 112,772.64 and 28,401.84 is: 42,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,148.96 : 112,772.64 = 28,401.84 : x
  2. Step 2: Convert to fraction form
    75,148.96/112,772.64 = 28,401.84/x
  3. Step 3: Cross multiply
    75,148.96x = 112,772.64 × 28,401.84
  4. Step 4: Simplify right side
    75,148.96x = 3,202,950,477.66
  5. Step 5: Solve for x
    x = 3,202,950,477.66/75,148.96
  6. Step 6: Final answer
    x = 42,621.35

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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.