Home / 72,106.43-99,506.27-39,840.94

Finding the Fourth Proportional to 72,106.43, 99,506.27 and 39,840.94

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Solution

The fourth proportional to 72,106.43, 99,506.27 and 39,840.94 is: 54,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,106.43 : 99,506.27 = 39,840.94 : x
  2. Step 2: Convert to fraction form
    72,106.43/99,506.27 = 39,840.94/x
  3. Step 3: Cross multiply
    72,106.43x = 99,506.27 × 39,840.94
  4. Step 4: Simplify right side
    72,106.43x = 3,964,423,133.49
  5. Step 5: Solve for x
    x = 3,964,423,133.49/72,106.43
  6. Step 6: Final answer
    x = 54,980.16

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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.