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Finding the Fourth Proportional to 72,068.92, 99,451.99 and 40,237.13

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Solution

The fourth proportional to 72,068.92, 99,451.99 and 40,237.13 is: 55,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068.92 : 99,451.99 = 40,237.13 : x
  2. Step 2: Convert to fraction form
    72,068.92/99,451.99 = 40,237.13/x
  3. Step 3: Cross multiply
    72,068.92x = 99,451.99 × 40,237.13
  4. Step 4: Simplify right side
    72,068.92x = 4,001,662,650.39
  5. Step 5: Solve for x
    x = 4,001,662,650.39/72,068.92
  6. Step 6: Final answer
    x = 55,525.50

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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.