Home / 86,029.10-128,984.70-43,827.50

Finding the Fourth Proportional to 86,029.10, 128,984.70 and 43,827.50

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Solution

The fourth proportional to 86,029.10, 128,984.70 and 43,827.50 is: 65,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,029.10 : 128,984.70 = 43,827.50 : x
  2. Step 2: Convert to fraction form
    86,029.10/128,984.70 = 43,827.50/x
  3. Step 3: Cross multiply
    86,029.10x = 128,984.70 × 43,827.50
  4. Step 4: Simplify right side
    86,029.10x = 5,653,076,939.25
  5. Step 5: Solve for x
    x = 5,653,076,939.25/86,029.10
  6. Step 6: Final answer
    x = 65,711.22

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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.