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Finding the Fourth Proportional to 70,702.40, 97,571.04 and 38,871.92

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Solution

The fourth proportional to 70,702.40, 97,571.04 and 38,871.92 is: 53,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,702.40 : 97,571.04 = 38,871.92 : x
  2. Step 2: Convert to fraction form
    70,702.40/97,571.04 = 38,871.92/x
  3. Step 3: Cross multiply
    70,702.40x = 97,571.04 × 38,871.92
  4. Step 4: Simplify right side
    70,702.40x = 3,792,773,661.20
  5. Step 5: Solve for x
    x = 3,792,773,661.20/70,702.40
  6. Step 6: Final answer
    x = 53,644.20

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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.