Home / 78,966.40-108,973.68-43,156.42

Finding the Fourth Proportional to 78,966.40, 108,973.68 and 43,156.42

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Solution

The fourth proportional to 78,966.40, 108,973.68 and 43,156.42 is: 59,555.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,966.40 : 108,973.68 = 43,156.42 : x
  2. Step 2: Convert to fraction form
    78,966.40/108,973.68 = 43,156.42/x
  3. Step 3: Cross multiply
    78,966.40x = 108,973.68 × 43,156.42
  4. Step 4: Simplify right side
    78,966.40x = 4,702,913,903.03
  5. Step 5: Solve for x
    x = 4,702,913,903.03/78,966.40
  6. Step 6: Final answer
    x = 59,555.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.