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Finding the Fourth Proportional to 70,500.96, 105,726.84 and 28,370.12

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Solution

The fourth proportional to 70,500.96, 105,726.84 and 28,370.12 is: 42,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.96 : 105,726.84 = 28,370.12 : x
  2. Step 2: Convert to fraction form
    70,500.96/105,726.84 = 28,370.12/x
  3. Step 3: Cross multiply
    70,500.96x = 105,726.84 × 28,370.12
  4. Step 4: Simplify right side
    70,500.96x = 2,999,483,138.02
  5. Step 5: Solve for x
    x = 2,999,483,138.02/70,500.96
  6. Step 6: Final answer
    x = 42,545.28

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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.