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Finding the Fourth Proportional to 64,830.80, 86,280.26 and 64,830.80

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Solution

The fourth proportional to 64,830.80, 86,280.26 and 64,830.80 is: 86,280.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,830.80 : 86,280.26 = 64,830.80 : x
  2. Step 2: Convert to fraction form
    64,830.80/86,280.26 = 64,830.80/x
  3. Step 3: Cross multiply
    64,830.80x = 86,280.26 × 64,830.80
  4. Step 4: Simplify right side
    64,830.80x = 5,593,618,280.01
  5. Step 5: Solve for x
    x = 5,593,618,280.01/64,830.80
  6. Step 6: Final answer
    x = 86,280.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.