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Finding the Fourth Proportional to 93,138.75, 128,531.48 and 50,697.59

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Solution

The fourth proportional to 93,138.75, 128,531.48 and 50,697.59 is: 69,962.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.75 : 128,531.48 = 50,697.59 : x
  2. Step 2: Convert to fraction form
    93,138.75/128,531.48 = 50,697.59/x
  3. Step 3: Cross multiply
    93,138.75x = 128,531.48 × 50,697.59
  4. Step 4: Simplify right side
    93,138.75x = 6,516,235,378.99
  5. Step 5: Solve for x
    x = 6,516,235,378.99/93,138.75
  6. Step 6: Final answer
    x = 69,962.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.