Home / 70,631.16-105,946.10-28,481.39

Finding the Fourth Proportional to 70,631.16, 105,946.10 and 28,481.39

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Solution

The fourth proportional to 70,631.16, 105,946.10 and 28,481.39 is: 42,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,631.16 : 105,946.10 = 28,481.39 : x
  2. Step 2: Convert to fraction form
    70,631.16/105,946.10 = 28,481.39/x
  3. Step 3: Cross multiply
    70,631.16x = 105,946.10 × 28,481.39
  4. Step 4: Simplify right side
    70,631.16x = 3,017,492,580.94
  5. Step 5: Solve for x
    x = 3,017,492,580.94/70,631.16
  6. Step 6: Final answer
    x = 42,721.83

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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.