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Finding the Fourth Proportional to 70,685.57, 97,455.13 and 57,891.62

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Solution

The fourth proportional to 70,685.57, 97,455.13 and 57,891.62 is: 79,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,685.57 : 97,455.13 = 57,891.62 : x
  2. Step 2: Convert to fraction form
    70,685.57/97,455.13 = 57,891.62/x
  3. Step 3: Cross multiply
    70,685.57x = 97,455.13 × 57,891.62
  4. Step 4: Simplify right side
    70,685.57x = 5,641,835,451.92
  5. Step 5: Solve for x
    x = 5,641,835,451.92/70,685.57
  6. Step 6: Final answer
    x = 79,815.94

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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.