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Finding the Fourth Proportional to 70,225.90, 105,370.50 and 38,214.70

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Solution

The fourth proportional to 70,225.90, 105,370.50 and 38,214.70 is: 57,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,225.90 : 105,370.50 = 38,214.70 : x
  2. Step 2: Convert to fraction form
    70,225.90/105,370.50 = 38,214.70/x
  3. Step 3: Cross multiply
    70,225.90x = 105,370.50 × 38,214.70
  4. Step 4: Simplify right side
    70,225.90x = 4,026,702,046.35
  5. Step 5: Solve for x
    x = 4,026,702,046.35/70,225.90
  6. Step 6: Final answer
    x = 57,339.27

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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.