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Finding the Fourth Proportional to 70,118.58, 105,228.62 and 27,430.30

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Solution

The fourth proportional to 70,118.58, 105,228.62 and 27,430.30 is: 41,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,118.58 : 105,228.62 = 27,430.30 : x
  2. Step 2: Convert to fraction form
    70,118.58/105,228.62 = 27,430.30/x
  3. Step 3: Cross multiply
    70,118.58x = 105,228.62 × 27,430.30
  4. Step 4: Simplify right side
    70,118.58x = 2,886,452,615.19
  5. Step 5: Solve for x
    x = 2,886,452,615.19/70,118.58
  6. Step 6: Final answer
    x = 41,165.30

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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.