Home / 80,317.12-120,482.64-21,152.32

Finding the Fourth Proportional to 80,317.12, 120,482.64 and 21,152.32

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Solution

The fourth proportional to 80,317.12, 120,482.64 and 21,152.32 is: 31,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,317.12 : 120,482.64 = 21,152.32 : x
  2. Step 2: Convert to fraction form
    80,317.12/120,482.64 = 21,152.32/x
  3. Step 3: Cross multiply
    80,317.12x = 120,482.64 × 21,152.32
  4. Step 4: Simplify right side
    80,317.12x = 2,548,487,355.72
  5. Step 5: Solve for x
    x = 2,548,487,355.72/80,317.12
  6. Step 6: Final answer
    x = 31,730.31

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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.