Home / 74,338.64-102,587.60-40,347.12

Finding the Fourth Proportional to 74,338.64, 102,587.60 and 40,347.12

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Solution

The fourth proportional to 74,338.64, 102,587.60 and 40,347.12 is: 55,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,338.64 : 102,587.60 = 40,347.12 : x
  2. Step 2: Convert to fraction form
    74,338.64/102,587.60 = 40,347.12/x
  3. Step 3: Cross multiply
    74,338.64x = 102,587.60 × 40,347.12
  4. Step 4: Simplify right side
    74,338.64x = 4,139,114,207.71
  5. Step 5: Solve for x
    x = 4,139,114,207.71/74,338.64
  6. Step 6: Final answer
    x = 55,679.18

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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.