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Finding the Fourth Proportional to 70,027.56, 105,071.58 and 38,418.12

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Solution

The fourth proportional to 70,027.56, 105,071.58 and 38,418.12 is: 57,643.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,027.56 : 105,071.58 = 38,418.12 : x
  2. Step 2: Convert to fraction form
    70,027.56/105,071.58 = 38,418.12/x
  3. Step 3: Cross multiply
    70,027.56x = 105,071.58 × 38,418.12
  4. Step 4: Simplify right side
    70,027.56x = 4,036,652,569.03
  5. Step 5: Solve for x
    x = 4,036,652,569.03/70,027.56
  6. Step 6: Final answer
    x = 57,643.77

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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.