Home / 72,756.79-100,403.32-40,925.68

Finding the Fourth Proportional to 72,756.79, 100,403.32 and 40,925.68

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Solution

The fourth proportional to 72,756.79, 100,403.32 and 40,925.68 is: 56,476.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,756.79 : 100,403.32 = 40,925.68 : x
  2. Step 2: Convert to fraction form
    72,756.79/100,403.32 = 40,925.68/x
  3. Step 3: Cross multiply
    72,756.79x = 100,403.32 × 40,925.68
  4. Step 4: Simplify right side
    72,756.79x = 4,109,074,145.26
  5. Step 5: Solve for x
    x = 4,109,074,145.26/72,756.79
  6. Step 6: Final answer
    x = 56,476.85

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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.