Home / 72,547.07-100,161.63-49,878.81

Finding the Fourth Proportional to 72,547.07, 100,161.63 and 49,878.81

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Solution

The fourth proportional to 72,547.07, 100,161.63 and 49,878.81 is: 68,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.07 : 100,161.63 = 49,878.81 : x
  2. Step 2: Convert to fraction form
    72,547.07/100,161.63 = 49,878.81/x
  3. Step 3: Cross multiply
    72,547.07x = 100,161.63 × 49,878.81
  4. Step 4: Simplify right side
    72,547.07x = 4,995,942,912.06
  5. Step 5: Solve for x
    x = 4,995,942,912.06/72,547.07
  6. Step 6: Final answer
    x = 68,864.85

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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.