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Finding the Fourth Proportional to 70,639.92, 97,483.08 and 38,807.76

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Solution

The fourth proportional to 70,639.92, 97,483.08 and 38,807.76 is: 53,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.92 : 97,483.08 = 38,807.76 : x
  2. Step 2: Convert to fraction form
    70,639.92/97,483.08 = 38,807.76/x
  3. Step 3: Cross multiply
    70,639.92x = 97,483.08 × 38,807.76
  4. Step 4: Simplify right side
    70,639.92x = 3,783,099,972.70
  5. Step 5: Solve for x
    x = 3,783,099,972.70/70,639.92
  6. Step 6: Final answer
    x = 53,554.70

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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.