Home / 78,053.41-117,058.85-21,890.03

Finding the Fourth Proportional to 78,053.41, 117,058.85 and 21,890.03

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Solution

The fourth proportional to 78,053.41, 117,058.85 and 21,890.03 is: 32,829.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,053.41 : 117,058.85 = 21,890.03 : x
  2. Step 2: Convert to fraction form
    78,053.41/117,058.85 = 21,890.03/x
  3. Step 3: Cross multiply
    78,053.41x = 117,058.85 × 21,890.03
  4. Step 4: Simplify right side
    78,053.41x = 2,562,421,921.46
  5. Step 5: Solve for x
    x = 2,562,421,921.46/78,053.41
  6. Step 6: Final answer
    x = 32,829.08

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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.