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Finding the Fourth Proportional to 89,019.70, 133,313.55 and 47,374.90

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Solution

The fourth proportional to 89,019.70, 133,313.55 and 47,374.90 is: 70,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,019.70 : 133,313.55 = 47,374.90 : x
  2. Step 2: Convert to fraction form
    89,019.70/133,313.55 = 47,374.90/x
  3. Step 3: Cross multiply
    89,019.70x = 133,313.55 × 47,374.90
  4. Step 4: Simplify right side
    89,019.70x = 6,315,716,099.90
  5. Step 5: Solve for x
    x = 6,315,716,099.90/89,019.70
  6. Step 6: Final answer
    x = 70,947.40

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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.