Home / 82,707.36-114,085.08-72,122.28

Finding the Fourth Proportional to 82,707.36, 114,085.08 and 72,122.28

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Solution

The fourth proportional to 82,707.36, 114,085.08 and 72,122.28 is: 99,484.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,707.36 : 114,085.08 = 72,122.28 : x
  2. Step 2: Convert to fraction form
    82,707.36/114,085.08 = 72,122.28/x
  3. Step 3: Cross multiply
    82,707.36x = 114,085.08 × 72,122.28
  4. Step 4: Simplify right side
    82,707.36x = 8,228,076,083.58
  5. Step 5: Solve for x
    x = 8,228,076,083.58/82,707.36
  6. Step 6: Final answer
    x = 99,484.21

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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.