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Finding the Fourth Proportional to 70,849.50, 97,772.32 and 39,018.34

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Solution

The fourth proportional to 70,849.50, 97,772.32 and 39,018.34 is: 53,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,849.50 : 97,772.32 = 39,018.34 : x
  2. Step 2: Convert to fraction form
    70,849.50/97,772.32 = 39,018.34/x
  3. Step 3: Cross multiply
    70,849.50x = 97,772.32 × 39,018.34
  4. Step 4: Simplify right side
    70,849.50x = 3,814,913,624.35
  5. Step 5: Solve for x
    x = 3,814,913,624.35/70,849.50
  6. Step 6: Final answer
    x = 53,845.31

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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.