Home / 42,117.04-63,120.90-17,128

Finding the Fourth Proportional to 42,117.04, 63,120.90 and 17,128

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Solution

The fourth proportional to 42,117.04, 63,120.90 and 17,128 is: 25,669.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,117.04 : 63,120.90 = 17,128 : x
  2. Step 2: Convert to fraction form
    42,117.04/63,120.90 = 17,128/x
  3. Step 3: Cross multiply
    42,117.04x = 63,120.90 × 17,128
  4. Step 4: Simplify right side
    42,117.04x = 1,081,134,775.20
  5. Step 5: Solve for x
    x = 1,081,134,775.20/42,117.04
  6. Step 6: Final answer
    x = 25,669.77

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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.