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Finding the Fourth Proportional to 82,875.70, 124,313.55 and 36,219.70

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Solution

The fourth proportional to 82,875.70, 124,313.55 and 36,219.70 is: 54,329.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,875.70 : 124,313.55 = 36,219.70 : x
  2. Step 2: Convert to fraction form
    82,875.70/124,313.55 = 36,219.70/x
  3. Step 3: Cross multiply
    82,875.70x = 124,313.55 × 36,219.70
  4. Step 4: Simplify right side
    82,875.70x = 4,502,599,486.94
  5. Step 5: Solve for x
    x = 4,502,599,486.94/82,875.70
  6. Step 6: Final answer
    x = 54,329.55

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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.