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Finding the Fourth Proportional to 70,639.75, 97,482.99 and 38,808.37

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Solution

The fourth proportional to 70,639.75, 97,482.99 and 38,808.37 is: 53,555.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.75 : 97,482.99 = 38,808.37 : x
  2. Step 2: Convert to fraction form
    70,639.75/97,482.99 = 38,808.37/x
  3. Step 3: Cross multiply
    70,639.75x = 97,482.99 × 38,808.37
  4. Step 4: Simplify right side
    70,639.75x = 3,783,155,944.63
  5. Step 5: Solve for x
    x = 3,783,155,944.63/70,639.75
  6. Step 6: Final answer
    x = 53,555.62

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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.