Home / 105,533.76-145,636-57,786.24

Finding the Fourth Proportional to 105,533.76, 145,636 and 57,786.24

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Solution

The fourth proportional to 105,533.76, 145,636 and 57,786.24 is: 79,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,533.76 : 145,636 = 57,786.24 : x
  2. Step 2: Convert to fraction form
    105,533.76/145,636 = 57,786.24/x
  3. Step 3: Cross multiply
    105,533.76x = 145,636 × 57,786.24
  4. Step 4: Simplify right side
    105,533.76x = 8,415,756,848.64
  5. Step 5: Solve for x
    x = 8,415,756,848.64/105,533.76
  6. Step 6: Final answer
    x = 79,744.69

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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.