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Finding the Fourth Proportional to 72,005.26, 99,385.48 and 42,964.86

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Solution

The fourth proportional to 72,005.26, 99,385.48 and 42,964.86 is: 59,302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,005.26 : 99,385.48 = 42,964.86 : x
  2. Step 2: Convert to fraction form
    72,005.26/99,385.48 = 42,964.86/x
  3. Step 3: Cross multiply
    72,005.26x = 99,385.48 × 42,964.86
  4. Step 4: Simplify right side
    72,005.26x = 4,270,083,234.23
  5. Step 5: Solve for x
    x = 4,270,083,234.23/72,005.26
  6. Step 6: Final answer
    x = 59,302.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.