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Finding the Fourth Proportional to 93,450.56, 128,964.96 and 51,012.80

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Solution

The fourth proportional to 93,450.56, 128,964.96 and 51,012.80 is: 70,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,450.56 : 128,964.96 = 51,012.80 : x
  2. Step 2: Convert to fraction form
    93,450.56/128,964.96 = 51,012.80/x
  3. Step 3: Cross multiply
    93,450.56x = 128,964.96 × 51,012.80
  4. Step 4: Simplify right side
    93,450.56x = 6,578,863,711.49
  5. Step 5: Solve for x
    x = 6,578,863,711.49/93,450.56
  6. Step 6: Final answer
    x = 70,399.40

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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.