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Finding the Fourth Proportional to 66,430.80, 99,673.08 and 26,977.68

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Solution

The fourth proportional to 66,430.80, 99,673.08 and 26,977.68 is: 40,477.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.80 : 99,673.08 = 26,977.68 : x
  2. Step 2: Convert to fraction form
    66,430.80/99,673.08 = 26,977.68/x
  3. Step 3: Cross multiply
    66,430.80x = 99,673.08 × 26,977.68
  4. Step 4: Simplify right side
    66,430.80x = 2,688,948,456.85
  5. Step 5: Solve for x
    x = 2,688,948,456.85/66,430.80
  6. Step 6: Final answer
    x = 40,477.44

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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.