Home / 72,117.71-99,521.97-40,286.33

Finding the Fourth Proportional to 72,117.71, 99,521.97 and 40,286.33

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Solution

The fourth proportional to 72,117.71, 99,521.97 and 40,286.33 is: 55,594.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,117.71 : 99,521.97 = 40,286.33 : x
  2. Step 2: Convert to fraction form
    72,117.71/99,521.97 = 40,286.33/x
  3. Step 3: Cross multiply
    72,117.71x = 99,521.97 × 40,286.33
  4. Step 4: Simplify right side
    72,117.71x = 4,009,374,925.67
  5. Step 5: Solve for x
    x = 4,009,374,925.67/72,117.71
  6. Step 6: Final answer
    x = 55,594.87

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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.