Home / 64,721.13-97,075.31-20,346.71

Finding the Fourth Proportional to 64,721.13, 97,075.31 and 20,346.71

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Solution

The fourth proportional to 64,721.13, 97,075.31 and 20,346.71 is: 30,518.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,721.13 : 97,075.31 = 20,346.71 : x
  2. Step 2: Convert to fraction form
    64,721.13/97,075.31 = 20,346.71/x
  3. Step 3: Cross multiply
    64,721.13x = 97,075.31 × 20,346.71
  4. Step 4: Simplify right side
    64,721.13x = 1,975,162,593.62
  5. Step 5: Solve for x
    x = 1,975,162,593.62/64,721.13
  6. Step 6: Final answer
    x = 30,518.05

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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.