Home / 74,124.16-102,291.40-40,132.66

Finding the Fourth Proportional to 74,124.16, 102,291.40 and 40,132.66

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Solution

The fourth proportional to 74,124.16, 102,291.40 and 40,132.66 is: 55,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,124.16 : 102,291.40 = 40,132.66 : x
  2. Step 2: Convert to fraction form
    74,124.16/102,291.40 = 40,132.66/x
  3. Step 3: Cross multiply
    74,124.16x = 102,291.40 × 40,132.66
  4. Step 4: Simplify right side
    74,124.16x = 4,105,225,977.12
  5. Step 5: Solve for x
    x = 4,105,225,977.12/74,124.16
  6. Step 6: Final answer
    x = 55,383.10

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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.