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Finding the Fourth Proportional to 57,779.10, 86,668.65 and 35,520.30

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Solution

The fourth proportional to 57,779.10, 86,668.65 and 35,520.30 is: 53,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,779.10 : 86,668.65 = 35,520.30 : x
  2. Step 2: Convert to fraction form
    57,779.10/86,668.65 = 35,520.30/x
  3. Step 3: Cross multiply
    57,779.10x = 86,668.65 × 35,520.30
  4. Step 4: Simplify right side
    57,779.10x = 3,078,496,448.60
  5. Step 5: Solve for x
    x = 3,078,496,448.60/57,779.10
  6. Step 6: Final answer
    x = 53,280.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.