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Finding the Fourth Proportional to 93,751.78, 129,376.69 and 51,310.21

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Solution

The fourth proportional to 93,751.78, 129,376.69 and 51,310.21 is: 70,807.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,751.78 : 129,376.69 = 51,310.21 : x
  2. Step 2: Convert to fraction form
    93,751.78/129,376.69 = 51,310.21/x
  3. Step 3: Cross multiply
    93,751.78x = 129,376.69 × 51,310.21
  4. Step 4: Simplify right side
    93,751.78x = 6,638,345,133.00
  5. Step 5: Solve for x
    x = 6,638,345,133.00/93,751.78
  6. Step 6: Final answer
    x = 70,807.67

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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.