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Finding the Fourth Proportional to 70,641.40, 97,486.74 and 38,808.28

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Solution

The fourth proportional to 70,641.40, 97,486.74 and 38,808.28 is: 53,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,641.40 : 97,486.74 = 38,808.28 : x
  2. Step 2: Convert to fraction form
    70,641.40/97,486.74 = 38,808.28/x
  3. Step 3: Cross multiply
    70,641.40x = 97,486.74 × 38,808.28
  4. Step 4: Simplify right side
    70,641.40x = 3,783,292,702.21
  5. Step 5: Solve for x
    x = 3,783,292,702.21/70,641.40
  6. Step 6: Final answer
    x = 53,556.31

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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.