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Finding the Fourth Proportional to 56,779.80, 85,169.70 and 55,613.40

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Solution

The fourth proportional to 56,779.80, 85,169.70 and 55,613.40 is: 83,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,779.80 : 85,169.70 = 55,613.40 : x
  2. Step 2: Convert to fraction form
    56,779.80/85,169.70 = 55,613.40/x
  3. Step 3: Cross multiply
    56,779.80x = 85,169.70 × 55,613.40
  4. Step 4: Simplify right side
    56,779.80x = 4,736,576,593.98
  5. Step 5: Solve for x
    x = 4,736,576,593.98/56,779.80
  6. Step 6: Final answer
    x = 83,420.10

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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.