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Finding the Fourth Proportional to 70,689.36, 97,548.72 and 38,857.98

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Solution

The fourth proportional to 70,689.36, 97,548.72 and 38,857.98 is: 53,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,689.36 : 97,548.72 = 38,857.98 : x
  2. Step 2: Convert to fraction form
    70,689.36/97,548.72 = 38,857.98/x
  3. Step 3: Cross multiply
    70,689.36x = 97,548.72 × 38,857.98
  4. Step 4: Simplify right side
    70,689.36x = 3,790,546,210.79
  5. Step 5: Solve for x
    x = 3,790,546,210.79/70,689.36
  6. Step 6: Final answer
    x = 53,622.58

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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.