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Finding the Fourth Proportional to 72,641.14, 100,254.14 and 40,810.08

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Solution

The fourth proportional to 72,641.14, 100,254.14 and 40,810.08 is: 56,323.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,641.14 : 100,254.14 = 40,810.08 : x
  2. Step 2: Convert to fraction form
    72,641.14/100,254.14 = 40,810.08/x
  3. Step 3: Cross multiply
    72,641.14x = 100,254.14 × 40,810.08
  4. Step 4: Simplify right side
    72,641.14x = 4,091,379,473.73
  5. Step 5: Solve for x
    x = 4,091,379,473.73/72,641.14
  6. Step 6: Final answer
    x = 56,323.17

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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.