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Finding the Fourth Proportional to 69,813.95, 103,931.26 and 69,398.75

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Solution

The fourth proportional to 69,813.95, 103,931.26 and 69,398.75 is: 103,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,813.95 : 103,931.26 = 69,398.75 : x
  2. Step 2: Convert to fraction form
    69,813.95/103,931.26 = 69,398.75/x
  3. Step 3: Cross multiply
    69,813.95x = 103,931.26 × 69,398.75
  4. Step 4: Simplify right side
    69,813.95x = 7,212,699,616.26
  5. Step 5: Solve for x
    x = 7,212,699,616.26/69,813.95
  6. Step 6: Final answer
    x = 103,313.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.