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Finding the Fourth Proportional to 72,476.98, 100,018.04 and 40,646.56

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Solution

The fourth proportional to 72,476.98, 100,018.04 and 40,646.56 is: 56,092.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.98 : 100,018.04 = 40,646.56 : x
  2. Step 2: Convert to fraction form
    72,476.98/100,018.04 = 40,646.56/x
  3. Step 3: Cross multiply
    72,476.98x = 100,018.04 × 40,646.56
  4. Step 4: Simplify right side
    72,476.98x = 4,065,388,810.66
  5. Step 5: Solve for x
    x = 4,065,388,810.66/72,476.98
  6. Step 6: Final answer
    x = 56,092.14

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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.