Home / 74,409.12-102,680.88-40,876.32

Finding the Fourth Proportional to 74,409.12, 102,680.88 and 40,876.32

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Solution

The fourth proportional to 74,409.12, 102,680.88 and 40,876.32 is: 56,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,409.12 : 102,680.88 = 40,876.32 : x
  2. Step 2: Convert to fraction form
    74,409.12/102,680.88 = 40,876.32/x
  3. Step 3: Cross multiply
    74,409.12x = 102,680.88 × 40,876.32
  4. Step 4: Simplify right side
    74,409.12x = 4,197,216,508.76
  5. Step 5: Solve for x
    x = 4,197,216,508.76/74,409.12
  6. Step 6: Final answer
    x = 56,407.29

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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.