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Finding the Fourth Proportional to 70,354.38, 97,089.21 and 38,089.34

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Solution

The fourth proportional to 70,354.38, 97,089.21 and 38,089.34 is: 52,563.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,354.38 : 97,089.21 = 38,089.34 : x
  2. Step 2: Convert to fraction form
    70,354.38/97,089.21 = 38,089.34/x
  3. Step 3: Cross multiply
    70,354.38x = 97,089.21 × 38,089.34
  4. Step 4: Simplify right side
    70,354.38x = 3,698,064,029.91
  5. Step 5: Solve for x
    x = 3,698,064,029.91/70,354.38
  6. Step 6: Final answer
    x = 52,563.38

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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.