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Finding the Fourth Proportional to 70,395.32, 97,147.97 and 38,564.21

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Solution

The fourth proportional to 70,395.32, 97,147.97 and 38,564.21 is: 53,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,395.32 : 97,147.97 = 38,564.21 : x
  2. Step 2: Convert to fraction form
    70,395.32/97,147.97 = 38,564.21/x
  3. Step 3: Cross multiply
    70,395.32x = 97,147.97 × 38,564.21
  4. Step 4: Simplify right side
    70,395.32x = 3,746,434,037.59
  5. Step 5: Solve for x
    x = 3,746,434,037.59/70,395.32
  6. Step 6: Final answer
    x = 53,219.93

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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.