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Finding the Fourth Proportional to 102,530.40, 153,622.80 and 49,826.40

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Solution

The fourth proportional to 102,530.40, 153,622.80 and 49,826.40 is: 74,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,530.40 : 153,622.80 = 49,826.40 : x
  2. Step 2: Convert to fraction form
    102,530.40/153,622.80 = 49,826.40/x
  3. Step 3: Cross multiply
    102,530.40x = 153,622.80 × 49,826.40
  4. Step 4: Simplify right side
    102,530.40x = 7,654,471,081.92
  5. Step 5: Solve for x
    x = 7,654,471,081.92/102,530.40
  6. Step 6: Final answer
    x = 74,655.62

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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.