Home / 75,009.10-103,511.56-42,745.64

Finding the Fourth Proportional to 75,009.10, 103,511.56 and 42,745.64

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Solution

The fourth proportional to 75,009.10, 103,511.56 and 42,745.64 is: 58,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,009.10 : 103,511.56 = 42,745.64 : x
  2. Step 2: Convert to fraction form
    75,009.10/103,511.56 = 42,745.64/x
  3. Step 3: Cross multiply
    75,009.10x = 103,511.56 × 42,745.64
  4. Step 4: Simplify right side
    75,009.10x = 4,424,668,182.55
  5. Step 5: Solve for x
    x = 4,424,668,182.55/75,009.10
  6. Step 6: Final answer
    x = 58,988.42

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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.