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Finding the Fourth Proportional to 70,055.04, 105,102.12 and 38,912.16

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Solution

The fourth proportional to 70,055.04, 105,102.12 and 38,912.16 is: 58,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,055.04 : 105,102.12 = 38,912.16 : x
  2. Step 2: Convert to fraction form
    70,055.04/105,102.12 = 38,912.16/x
  3. Step 3: Cross multiply
    70,055.04x = 105,102.12 × 38,912.16
  4. Step 4: Simplify right side
    70,055.04x = 4,089,750,509.78
  5. Step 5: Solve for x
    x = 4,089,750,509.78/70,055.04
  6. Step 6: Final answer
    x = 58,379.10

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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.