Home / 74,165.10-102,355.14-42,338.76

Finding the Fourth Proportional to 74,165.10, 102,355.14 and 42,338.76

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Solution

The fourth proportional to 74,165.10, 102,355.14 and 42,338.76 is: 58,431.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,165.10 : 102,355.14 = 42,338.76 : x
  2. Step 2: Convert to fraction form
    74,165.10/102,355.14 = 42,338.76/x
  3. Step 3: Cross multiply
    74,165.10x = 102,355.14 × 42,338.76
  4. Step 4: Simplify right side
    74,165.10x = 4,333,589,707.23
  5. Step 5: Solve for x
    x = 4,333,589,707.23/74,165.10
  6. Step 6: Final answer
    x = 58,431.66

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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.