Home / 78,123.48-117,202.62-43,045.08

Finding the Fourth Proportional to 78,123.48, 117,202.62 and 43,045.08

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Solution

The fourth proportional to 78,123.48, 117,202.62 and 43,045.08 is: 64,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,123.48 : 117,202.62 = 43,045.08 : x
  2. Step 2: Convert to fraction form
    78,123.48/117,202.62 = 43,045.08/x
  3. Step 3: Cross multiply
    78,123.48x = 117,202.62 × 43,045.08
  4. Step 4: Simplify right side
    78,123.48x = 5,044,996,154.11
  5. Step 5: Solve for x
    x = 5,044,996,154.11/78,123.48
  6. Step 6: Final answer
    x = 64,577.21

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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.