Home / 81,442.64-122,166.36-28,888.40

Finding the Fourth Proportional to 81,442.64, 122,166.36 and 28,888.40

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Solution

The fourth proportional to 81,442.64, 122,166.36 and 28,888.40 is: 43,333.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,442.64 : 122,166.36 = 28,888.40 : x
  2. Step 2: Convert to fraction form
    81,442.64/122,166.36 = 28,888.40/x
  3. Step 3: Cross multiply
    81,442.64x = 122,166.36 × 28,888.40
  4. Step 4: Simplify right side
    81,442.64x = 3,529,190,674.22
  5. Step 5: Solve for x
    x = 3,529,190,674.22/81,442.64
  6. Step 6: Final answer
    x = 43,333.45

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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.