Home / 75,108.26-103,643.35-42,400.67

Finding the Fourth Proportional to 75,108.26, 103,643.35 and 42,400.67

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Solution

The fourth proportional to 75,108.26, 103,643.35 and 42,400.67 is: 58,509.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,108.26 : 103,643.35 = 42,400.67 : x
  2. Step 2: Convert to fraction form
    75,108.26/103,643.35 = 42,400.67/x
  3. Step 3: Cross multiply
    75,108.26x = 103,643.35 × 42,400.67
  4. Step 4: Simplify right side
    75,108.26x = 4,394,546,856.83
  5. Step 5: Solve for x
    x = 4,394,546,856.83/75,108.26
  6. Step 6: Final answer
    x = 58,509.50

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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.