Home / 85,750.11-128,669.04-40,822.25

Finding the Fourth Proportional to 85,750.11, 128,669.04 and 40,822.25

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Solution

The fourth proportional to 85,750.11, 128,669.04 and 40,822.25 is: 61,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.11 : 128,669.04 = 40,822.25 : x
  2. Step 2: Convert to fraction form
    85,750.11/128,669.04 = 40,822.25/x
  3. Step 3: Cross multiply
    85,750.11x = 128,669.04 × 40,822.25
  4. Step 4: Simplify right side
    85,750.11x = 5,252,559,074.79
  5. Step 5: Solve for x
    x = 5,252,559,074.79/85,750.11
  6. Step 6: Final answer
    x = 61,254.25

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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.