Home / 70,139.04-105,228-38,996.16

Finding the Fourth Proportional to 70,139.04, 105,228 and 38,996.16

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Solution

The fourth proportional to 70,139.04, 105,228 and 38,996.16 is: 58,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.04 : 105,228 = 38,996.16 : x
  2. Step 2: Convert to fraction form
    70,139.04/105,228 = 38,996.16/x
  3. Step 3: Cross multiply
    70,139.04x = 105,228 × 38,996.16
  4. Step 4: Simplify right side
    70,139.04x = 4,103,487,924.48
  5. Step 5: Solve for x
    x = 4,103,487,924.48/70,139.04
  6. Step 6: Final answer
    x = 58,505.05

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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.