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Finding the Fourth Proportional to 70,783.62, 97,681.86 and 38,951.70

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Solution

The fourth proportional to 70,783.62, 97,681.86 and 38,951.70 is: 53,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,783.62 : 97,681.86 = 38,951.70 : x
  2. Step 2: Convert to fraction form
    70,783.62/97,681.86 = 38,951.70/x
  3. Step 3: Cross multiply
    70,783.62x = 97,681.86 × 38,951.70
  4. Step 4: Simplify right side
    70,783.62x = 3,804,874,506.16
  5. Step 5: Solve for x
    x = 3,804,874,506.16/70,783.62
  6. Step 6: Final answer
    x = 53,753.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.