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Finding the Fourth Proportional to 72,767.71, 100,425.18 and 40,938.94

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Solution

The fourth proportional to 72,767.71, 100,425.18 and 40,938.94 is: 56,498.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,767.71 : 100,425.18 = 40,938.94 : x
  2. Step 2: Convert to fraction form
    72,767.71/100,425.18 = 40,938.94/x
  3. Step 3: Cross multiply
    72,767.71x = 100,425.18 × 40,938.94
  4. Step 4: Simplify right side
    72,767.71x = 4,111,300,418.51
  5. Step 5: Solve for x
    x = 4,111,300,418.51/72,767.71
  6. Step 6: Final answer
    x = 56,498.97

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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.