Home / 81,172.64-112,089.60-51,010.40

Finding the Fourth Proportional to 81,172.64, 112,089.60 and 51,010.40

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Solution

The fourth proportional to 81,172.64, 112,089.60 and 51,010.40 is: 70,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,172.64 : 112,089.60 = 51,010.40 : x
  2. Step 2: Convert to fraction form
    81,172.64/112,089.60 = 51,010.40/x
  3. Step 3: Cross multiply
    81,172.64x = 112,089.60 × 51,010.40
  4. Step 4: Simplify right side
    81,172.64x = 5,717,735,331.84
  5. Step 5: Solve for x
    x = 5,717,735,331.84/81,172.64
  6. Step 6: Final answer
    x = 70,439.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.