Home / 75,643.20-104,378.56-43,807.68

Finding the Fourth Proportional to 75,643.20, 104,378.56 and 43,807.68

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Solution

The fourth proportional to 75,643.20, 104,378.56 and 43,807.68 is: 60,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,643.20 : 104,378.56 = 43,807.68 : x
  2. Step 2: Convert to fraction form
    75,643.20/104,378.56 = 43,807.68/x
  3. Step 3: Cross multiply
    75,643.20x = 104,378.56 × 43,807.68
  4. Step 4: Simplify right side
    75,643.20x = 4,572,582,555.34
  5. Step 5: Solve for x
    x = 4,572,582,555.34/75,643.20
  6. Step 6: Final answer
    x = 60,449.35

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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.