Home / 76,483.44-105,530-42,947.28

Finding the Fourth Proportional to 76,483.44, 105,530 and 42,947.28

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Solution

The fourth proportional to 76,483.44, 105,530 and 42,947.28 is: 59,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,483.44 : 105,530 = 42,947.28 : x
  2. Step 2: Convert to fraction form
    76,483.44/105,530 = 42,947.28/x
  3. Step 3: Cross multiply
    76,483.44x = 105,530 × 42,947.28
  4. Step 4: Simplify right side
    76,483.44x = 4,532,226,458.40
  5. Step 5: Solve for x
    x = 4,532,226,458.40/76,483.44
  6. Step 6: Final answer
    x = 59,257.62

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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.