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Finding the Fourth Proportional to 70,012.78, 105,035.58 and 43,025.20

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Solution

The fourth proportional to 70,012.78, 105,035.58 and 43,025.20 is: 64,547.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,012.78 : 105,035.58 = 43,025.20 : x
  2. Step 2: Convert to fraction form
    70,012.78/105,035.58 = 43,025.20/x
  3. Step 3: Cross multiply
    70,012.78x = 105,035.58 × 43,025.20
  4. Step 4: Simplify right side
    70,012.78x = 4,519,176,574.03
  5. Step 5: Solve for x
    x = 4,519,176,574.03/70,012.78
  6. Step 6: Final answer
    x = 64,547.88

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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.