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Finding the Fourth Proportional to 93,222.72, 128,648 and 50,782.40

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Solution

The fourth proportional to 93,222.72, 128,648 and 50,782.40 is: 70,080.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,222.72 : 128,648 = 50,782.40 : x
  2. Step 2: Convert to fraction form
    93,222.72/128,648 = 50,782.40/x
  3. Step 3: Cross multiply
    93,222.72x = 128,648 × 50,782.40
  4. Step 4: Simplify right side
    93,222.72x = 6,533,054,195.20
  5. Step 5: Solve for x
    x = 6,533,054,195.20/93,222.72
  6. Step 6: Final answer
    x = 70,080.06

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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.