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Finding the Fourth Proportional to 76,157.40, 105,099.30 and 42,623.40

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Solution

The fourth proportional to 76,157.40, 105,099.30 and 42,623.40 is: 58,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,157.40 : 105,099.30 = 42,623.40 : x
  2. Step 2: Convert to fraction form
    76,157.40/105,099.30 = 42,623.40/x
  3. Step 3: Cross multiply
    76,157.40x = 105,099.30 × 42,623.40
  4. Step 4: Simplify right side
    76,157.40x = 4,479,689,503.62
  5. Step 5: Solve for x
    x = 4,479,689,503.62/76,157.40
  6. Step 6: Final answer
    x = 58,821.46

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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.