Home / 74,775.48-103,189.75-40,783.33

Finding the Fourth Proportional to 74,775.48, 103,189.75 and 40,783.33

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Solution

The fourth proportional to 74,775.48, 103,189.75 and 40,783.33 is: 56,280.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,775.48 : 103,189.75 = 40,783.33 : x
  2. Step 2: Convert to fraction form
    74,775.48/103,189.75 = 40,783.33/x
  3. Step 3: Cross multiply
    74,775.48x = 103,189.75 × 40,783.33
  4. Step 4: Simplify right side
    74,775.48x = 4,208,421,626.87
  5. Step 5: Solve for x
    x = 4,208,421,626.87/74,775.48
  6. Step 6: Final answer
    x = 56,280.77

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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.