Home / 64,878.06-97,308.74-20,509.30

Finding the Fourth Proportional to 64,878.06, 97,308.74 and 20,509.30

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Solution

The fourth proportional to 64,878.06, 97,308.74 and 20,509.30 is: 30,761.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.06 : 97,308.74 = 20,509.30 : x
  2. Step 2: Convert to fraction form
    64,878.06/97,308.74 = 20,509.30/x
  3. Step 3: Cross multiply
    64,878.06x = 97,308.74 × 20,509.30
  4. Step 4: Simplify right side
    64,878.06x = 1,995,734,141.28
  5. Step 5: Solve for x
    x = 1,995,734,141.28/64,878.06
  6. Step 6: Final answer
    x = 30,761.31

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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.