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Finding the Fourth Proportional to 70,518.92, 97,317.95 and 39,889.53

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Solution

The fourth proportional to 70,518.92, 97,317.95 and 39,889.53 is: 55,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.92 : 97,317.95 = 39,889.53 : x
  2. Step 2: Convert to fraction form
    70,518.92/97,317.95 = 39,889.53/x
  3. Step 3: Cross multiply
    70,518.92x = 97,317.95 × 39,889.53
  4. Step 4: Simplify right side
    70,518.92x = 3,881,967,086.62
  5. Step 5: Solve for x
    x = 3,881,967,086.62/70,518.92
  6. Step 6: Final answer
    x = 55,048.59

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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.