Home / 78,298.29-117,446.85-19,133.46

Finding the Fourth Proportional to 78,298.29, 117,446.85 and 19,133.46

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Solution

The fourth proportional to 78,298.29, 117,446.85 and 19,133.46 is: 28,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,298.29 : 117,446.85 = 19,133.46 : x
  2. Step 2: Convert to fraction form
    78,298.29/117,446.85 = 19,133.46/x
  3. Step 3: Cross multiply
    78,298.29x = 117,446.85 × 19,133.46
  4. Step 4: Simplify right side
    78,298.29x = 2,247,164,606.60
  5. Step 5: Solve for x
    x = 2,247,164,606.60/78,298.29
  6. Step 6: Final answer
    x = 28,700.05

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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.