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Finding the Fourth Proportional to 70,399.40, 97,152.90 and 38,568.40

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Solution

The fourth proportional to 70,399.40, 97,152.90 and 38,568.40 is: 53,225.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,399.40 : 97,152.90 = 38,568.40 : x
  2. Step 2: Convert to fraction form
    70,399.40/97,152.90 = 38,568.40/x
  3. Step 3: Cross multiply
    70,399.40x = 97,152.90 × 38,568.40
  4. Step 4: Simplify right side
    70,399.40x = 3,747,031,908.36
  5. Step 5: Solve for x
    x = 3,747,031,908.36/70,399.40
  6. Step 6: Final answer
    x = 53,225.34

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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.