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Finding the Fourth Proportional to 70,145.40, 105,218.52 and 23,398.14

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Solution

The fourth proportional to 70,145.40, 105,218.52 and 23,398.14 is: 35,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,145.40 : 105,218.52 = 23,398.14 : x
  2. Step 2: Convert to fraction form
    70,145.40/105,218.52 = 23,398.14/x
  3. Step 3: Cross multiply
    70,145.40x = 105,218.52 × 23,398.14
  4. Step 4: Simplify right side
    70,145.40x = 2,461,917,661.55
  5. Step 5: Solve for x
    x = 2,461,917,661.55/70,145.40
  6. Step 6: Final answer
    x = 35,097.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.