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Finding the Fourth Proportional to 70,547.62, 105,682.96 and 40,903.15

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Solution

The fourth proportional to 70,547.62, 105,682.96 and 40,903.15 is: 61,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,547.62 : 105,682.96 = 40,903.15 : x
  2. Step 2: Convert to fraction form
    70,547.62/105,682.96 = 40,903.15/x
  3. Step 3: Cross multiply
    70,547.62x = 105,682.96 × 40,903.15
  4. Step 4: Simplify right side
    70,547.62x = 4,322,765,965.32
  5. Step 5: Solve for x
    x = 4,322,765,965.32/70,547.62
  6. Step 6: Final answer
    x = 61,274.44

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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.