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Finding the Fourth Proportional to 70,640.79, 97,485.02 and 38,810.35

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Solution

The fourth proportional to 70,640.79, 97,485.02 and 38,810.35 is: 53,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.79 : 97,485.02 = 38,810.35 : x
  2. Step 2: Convert to fraction form
    70,640.79/97,485.02 = 38,810.35/x
  3. Step 3: Cross multiply
    70,640.79x = 97,485.02 × 38,810.35
  4. Step 4: Simplify right side
    70,640.79x = 3,783,427,745.96
  5. Step 5: Solve for x
    x = 3,783,427,745.96/70,640.79
  6. Step 6: Final answer
    x = 53,558.68

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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.