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Finding the Fourth Proportional to 70,500.62, 105,726.30 and 28,369.77

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Solution

The fourth proportional to 70,500.62, 105,726.30 and 28,369.77 is: 42,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.62 : 105,726.30 = 28,369.77 : x
  2. Step 2: Convert to fraction form
    70,500.62/105,726.30 = 28,369.77/x
  3. Step 3: Cross multiply
    70,500.62x = 105,726.30 × 28,369.77
  4. Step 4: Simplify right side
    70,500.62x = 2,999,430,905.80
  5. Step 5: Solve for x
    x = 2,999,430,905.80/70,500.62
  6. Step 6: Final answer
    x = 42,544.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.