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Finding the Fourth Proportional to 71,900.70, 98,504.40 and 69,207.18

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Solution

The fourth proportional to 71,900.70, 98,504.40 and 69,207.18 is: 94,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,900.70 : 98,504.40 = 69,207.18 : x
  2. Step 2: Convert to fraction form
    71,900.70/98,504.40 = 69,207.18/x
  3. Step 3: Cross multiply
    71,900.70x = 98,504.40 × 69,207.18
  4. Step 4: Simplify right side
    71,900.70x = 6,817,211,741.59
  5. Step 5: Solve for x
    x = 6,817,211,741.59/71,900.70
  6. Step 6: Final answer
    x = 94,814.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.