Home / 72,457.68-99,989.46-40,627.92

Finding the Fourth Proportional to 72,457.68, 99,989.46 and 40,627.92

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Solution

The fourth proportional to 72,457.68, 99,989.46 and 40,627.92 is: 56,065.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,457.68 : 99,989.46 = 40,627.92 : x
  2. Step 2: Convert to fraction form
    72,457.68/99,989.46 = 40,627.92/x
  3. Step 3: Cross multiply
    72,457.68x = 99,989.46 × 40,627.92
  4. Step 4: Simplify right side
    72,457.68x = 4,062,363,781.72
  5. Step 5: Solve for x
    x = 4,062,363,781.72/72,457.68
  6. Step 6: Final answer
    x = 56,065.33

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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.