Home / 70,154.16-105,210.66-38,128.26

Finding the Fourth Proportional to 70,154.16, 105,210.66 and 38,128.26

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Solution

The fourth proportional to 70,154.16, 105,210.66 and 38,128.26 is: 57,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,154.16 : 105,210.66 = 38,128.26 : x
  2. Step 2: Convert to fraction form
    70,154.16/105,210.66 = 38,128.26/x
  3. Step 3: Cross multiply
    70,154.16x = 105,210.66 × 38,128.26
  4. Step 4: Simplify right side
    70,154.16x = 4,011,499,399.25
  5. Step 5: Solve for x
    x = 4,011,499,399.25/70,154.16
  6. Step 6: Final answer
    x = 57,181.20

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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.