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Finding the Fourth Proportional to 70,515.92, 97,311.98 and 38,684.81

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Solution

The fourth proportional to 70,515.92, 97,311.98 and 38,684.81 is: 53,385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,515.92 : 97,311.98 = 38,684.81 : x
  2. Step 2: Convert to fraction form
    70,515.92/97,311.98 = 38,684.81/x
  3. Step 3: Cross multiply
    70,515.92x = 97,311.98 × 38,684.81
  4. Step 4: Simplify right side
    70,515.92x = 3,764,495,457.02
  5. Step 5: Solve for x
    x = 3,764,495,457.02/70,515.92
  6. Step 6: Final answer
    x = 53,385.04

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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.