Home / 70,505.18-97,303.38-38,680.28

Finding the Fourth Proportional to 70,505.18, 97,303.38 and 38,680.28

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Solution

The fourth proportional to 70,505.18, 97,303.38 and 38,680.28 is: 53,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,505.18 : 97,303.38 = 38,680.28 : x
  2. Step 2: Convert to fraction form
    70,505.18/97,303.38 = 38,680.28/x
  3. Step 3: Cross multiply
    70,505.18x = 97,303.38 × 38,680.28
  4. Step 4: Simplify right side
    70,505.18x = 3,763,721,983.35
  5. Step 5: Solve for x
    x = 3,763,721,983.35/70,505.18
  6. Step 6: Final answer
    x = 53,382.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.