Home / 80,291.16-120,654.63-42,877.26

Finding the Fourth Proportional to 80,291.16, 120,654.63 and 42,877.26

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Solution

The fourth proportional to 80,291.16, 120,654.63 and 42,877.26 is: 64,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,291.16 : 120,654.63 = 42,877.26 : x
  2. Step 2: Convert to fraction form
    80,291.16/120,654.63 = 42,877.26/x
  3. Step 3: Cross multiply
    80,291.16x = 120,654.63 × 42,877.26
  4. Step 4: Simplify right side
    80,291.16x = 5,173,339,940.71
  5. Step 5: Solve for x
    x = 5,173,339,940.71/80,291.16
  6. Step 6: Final answer
    x = 64,432.25

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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.