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Finding the Fourth Proportional to 70,433.45, 105,647.43 and 28,300.89

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Solution

The fourth proportional to 70,433.45, 105,647.43 and 28,300.89 is: 42,450.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,433.45 : 105,647.43 = 28,300.89 : x
  2. Step 2: Convert to fraction form
    70,433.45/105,647.43 = 28,300.89/x
  3. Step 3: Cross multiply
    70,433.45x = 105,647.43 × 28,300.89
  4. Step 4: Simplify right side
    70,433.45x = 2,989,916,295.21
  5. Step 5: Solve for x
    x = 2,989,916,295.21/70,433.45
  6. Step 6: Final answer
    x = 42,450.24

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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.