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Finding the Fourth Proportional to 66,870.30, 100,291.05 and 29,430.30

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Solution

The fourth proportional to 66,870.30, 100,291.05 and 29,430.30 is: 44,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.30 : 100,291.05 = 29,430.30 : x
  2. Step 2: Convert to fraction form
    66,870.30/100,291.05 = 29,430.30/x
  3. Step 3: Cross multiply
    66,870.30x = 100,291.05 × 29,430.30
  4. Step 4: Simplify right side
    66,870.30x = 2,951,595,688.82
  5. Step 5: Solve for x
    x = 2,951,595,688.82/66,870.30
  6. Step 6: Final answer
    x = 44,139.11

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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.