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Finding the Fourth Proportional to 78,030.80, 116,882.18 and 64,908.80

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Solution

The fourth proportional to 78,030.80, 116,882.18 and 64,908.80 is: 97,226.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,030.80 : 116,882.18 = 64,908.80 : x
  2. Step 2: Convert to fraction form
    78,030.80/116,882.18 = 64,908.80/x
  3. Step 3: Cross multiply
    78,030.80x = 116,882.18 × 64,908.80
  4. Step 4: Simplify right side
    78,030.80x = 7,586,681,720.64
  5. Step 5: Solve for x
    x = 7,586,681,720.64/78,030.80
  6. Step 6: Final answer
    x = 97,226.76

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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.