Home / 76,621.52-105,735.68-42,630.07

Finding the Fourth Proportional to 76,621.52, 105,735.68 and 42,630.07

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Solution

The fourth proportional to 76,621.52, 105,735.68 and 42,630.07 is: 58,828.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,621.52 : 105,735.68 = 42,630.07 : x
  2. Step 2: Convert to fraction form
    76,621.52/105,735.68 = 42,630.07/x
  3. Step 3: Cross multiply
    76,621.52x = 105,735.68 × 42,630.07
  4. Step 4: Simplify right side
    76,621.52x = 4,507,519,796.97
  5. Step 5: Solve for x
    x = 4,507,519,796.97/76,621.52
  6. Step 6: Final answer
    x = 58,828.38

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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.