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Finding the Fourth Proportional to 93,245, 128,678.10 and 50,803.52

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Solution

The fourth proportional to 93,245, 128,678.10 and 50,803.52 is: 70,108.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,245 : 128,678.10 = 50,803.52 : x
  2. Step 2: Convert to fraction form
    93,245/128,678.10 = 50,803.52/x
  3. Step 3: Cross multiply
    93,245x = 128,678.10 × 50,803.52
  4. Step 4: Simplify right side
    93,245x = 6,537,300,426.91
  5. Step 5: Solve for x
    x = 6,537,300,426.91/93,245
  6. Step 6: Final answer
    x = 70,108.86

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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.