Home / 40,116.74-55,302.08-30,539.90

Finding the Fourth Proportional to 40,116.74, 55,302.08 and 30,539.90

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Solution

The fourth proportional to 40,116.74, 55,302.08 and 30,539.90 is: 42,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,116.74 : 55,302.08 = 30,539.90 : x
  2. Step 2: Convert to fraction form
    40,116.74/55,302.08 = 30,539.90/x
  3. Step 3: Cross multiply
    40,116.74x = 55,302.08 × 30,539.90
  4. Step 4: Simplify right side
    40,116.74x = 1,688,919,978.55
  5. Step 5: Solve for x
    x = 1,688,919,978.55/40,116.74
  6. Step 6: Final answer
    x = 42,100.14

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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.