Home / 74,146.60-102,329.64-42,320.29

Finding the Fourth Proportional to 74,146.60, 102,329.64 and 42,320.29

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Solution

The fourth proportional to 74,146.60, 102,329.64 and 42,320.29 is: 58,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,146.60 : 102,329.64 = 42,320.29 : x
  2. Step 2: Convert to fraction form
    74,146.60/102,329.64 = 42,320.29/x
  3. Step 3: Cross multiply
    74,146.60x = 102,329.64 × 42,320.29
  4. Step 4: Simplify right side
    74,146.60x = 4,330,620,040.40
  5. Step 5: Solve for x
    x = 4,330,620,040.40/74,146.60
  6. Step 6: Final answer
    x = 58,406.19

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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.