Home / 72,515.70-100,090.05-49,554.81

Finding the Fourth Proportional to 72,515.70, 100,090.05 and 49,554.81

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Solution

The fourth proportional to 72,515.70, 100,090.05 and 49,554.81 is: 68,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.70 : 100,090.05 = 49,554.81 : x
  2. Step 2: Convert to fraction form
    72,515.70/100,090.05 = 49,554.81/x
  3. Step 3: Cross multiply
    72,515.70x = 100,090.05 × 49,554.81
  4. Step 4: Simplify right side
    72,515.70x = 4,959,943,410.64
  5. Step 5: Solve for x
    x = 4,959,943,410.64/72,515.70
  6. Step 6: Final answer
    x = 68,398.20

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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.