Home / 81,579.12-112,607.28-51,415.26

Finding the Fourth Proportional to 81,579.12, 112,607.28 and 51,415.26

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Solution

The fourth proportional to 81,579.12, 112,607.28 and 51,415.26 is: 70,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,579.12 : 112,607.28 = 51,415.26 : x
  2. Step 2: Convert to fraction form
    81,579.12/112,607.28 = 51,415.26/x
  3. Step 3: Cross multiply
    81,579.12x = 112,607.28 × 51,415.26
  4. Step 4: Simplify right side
    81,579.12x = 5,789,732,579.09
  5. Step 5: Solve for x
    x = 5,789,732,579.09/81,579.12
  6. Step 6: Final answer
    x = 70,970.77

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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.