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Finding the Fourth Proportional to 82,813.70, 124,111.20 and 73,409.60

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Solution

The fourth proportional to 82,813.70, 124,111.20 and 73,409.60 is: 110,017.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,813.70 : 124,111.20 = 73,409.60 : x
  2. Step 2: Convert to fraction form
    82,813.70/124,111.20 = 73,409.60/x
  3. Step 3: Cross multiply
    82,813.70x = 124,111.20 × 73,409.60
  4. Step 4: Simplify right side
    82,813.70x = 9,110,953,547.52
  5. Step 5: Solve for x
    x = 9,110,953,547.52/82,813.70
  6. Step 6: Final answer
    x = 110,017.47

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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.