Home / 42,579.48-63,841.41-20,392.14

Finding the Fourth Proportional to 42,579.48, 63,841.41 and 20,392.14

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Solution

The fourth proportional to 42,579.48, 63,841.41 and 20,392.14 is: 30,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,579.48 : 63,841.41 = 20,392.14 : x
  2. Step 2: Convert to fraction form
    42,579.48/63,841.41 = 20,392.14/x
  3. Step 3: Cross multiply
    42,579.48x = 63,841.41 × 20,392.14
  4. Step 4: Simplify right side
    42,579.48x = 1,301,862,970.52
  5. Step 5: Solve for x
    x = 1,301,862,970.52/42,579.48
  6. Step 6: Final answer
    x = 30,574.89

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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.