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Finding the Fourth Proportional to 58,800.08, 80,907 and 57,400.40

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Solution

The fourth proportional to 58,800.08, 80,907 and 57,400.40 is: 78,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,800.08 : 80,907 = 57,400.40 : x
  2. Step 2: Convert to fraction form
    58,800.08/80,907 = 57,400.40/x
  3. Step 3: Cross multiply
    58,800.08x = 80,907 × 57,400.40
  4. Step 4: Simplify right side
    58,800.08x = 4,644,094,162.80
  5. Step 5: Solve for x
    x = 4,644,094,162.80/58,800.08
  6. Step 6: Final answer
    x = 78,981.09

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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.