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Finding the Fourth Proportional to 76,481.04, 105,543.36 and 42,947.04

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Solution

The fourth proportional to 76,481.04, 105,543.36 and 42,947.04 is: 59,266.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,481.04 : 105,543.36 = 42,947.04 : x
  2. Step 2: Convert to fraction form
    76,481.04/105,543.36 = 42,947.04/x
  3. Step 3: Cross multiply
    76,481.04x = 105,543.36 × 42,947.04
  4. Step 4: Simplify right side
    76,481.04x = 4,532,774,903.65
  5. Step 5: Solve for x
    x = 4,532,774,903.65/76,481.04
  6. Step 6: Final answer
    x = 59,266.65

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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.