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Finding the Fourth Proportional to 70,090.96, 105,073.92 and 25,707.36

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Solution

The fourth proportional to 70,090.96, 105,073.92 and 25,707.36 is: 38,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,090.96 : 105,073.92 = 25,707.36 : x
  2. Step 2: Convert to fraction form
    70,090.96/105,073.92 = 25,707.36/x
  3. Step 3: Cross multiply
    70,090.96x = 105,073.92 × 25,707.36
  4. Step 4: Simplify right side
    70,090.96x = 2,701,173,088.05
  5. Step 5: Solve for x
    x = 2,701,173,088.05/70,090.96
  6. Step 6: Final answer
    x = 38,538.11

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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.