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Finding the Fourth Proportional to 72,451.58, 99,977.44 and 40,616.15

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Solution

The fourth proportional to 72,451.58, 99,977.44 and 40,616.15 is: 56,047.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,451.58 : 99,977.44 = 40,616.15 : x
  2. Step 2: Convert to fraction form
    72,451.58/99,977.44 = 40,616.15/x
  3. Step 3: Cross multiply
    72,451.58x = 99,977.44 × 40,616.15
  4. Step 4: Simplify right side
    72,451.58x = 4,060,698,496.58
  5. Step 5: Solve for x
    x = 4,060,698,496.58/72,451.58
  6. Step 6: Final answer
    x = 56,047.07

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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.