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Finding the Fourth Proportional to 64,785.80, 97,221.90 and 29,707.40

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Solution

The fourth proportional to 64,785.80, 97,221.90 and 29,707.40 is: 44,580.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,785.80 : 97,221.90 = 29,707.40 : x
  2. Step 2: Convert to fraction form
    64,785.80/97,221.90 = 29,707.40/x
  3. Step 3: Cross multiply
    64,785.80x = 97,221.90 × 29,707.40
  4. Step 4: Simplify right side
    64,785.80x = 2,888,209,872.06
  5. Step 5: Solve for x
    x = 2,888,209,872.06/64,785.80
  6. Step 6: Final answer
    x = 44,580.91

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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.