Home / 70,787.40-97,690.68-40,577.76

Finding the Fourth Proportional to 70,787.40, 97,690.68 and 40,577.76

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Solution

The fourth proportional to 70,787.40, 97,690.68 and 40,577.76 is: 55,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,787.40 : 97,690.68 = 40,577.76 : x
  2. Step 2: Convert to fraction form
    70,787.40/97,690.68 = 40,577.76/x
  3. Step 3: Cross multiply
    70,787.40x = 97,690.68 × 40,577.76
  4. Step 4: Simplify right side
    70,787.40x = 3,964,068,967.28
  5. Step 5: Solve for x
    x = 3,964,068,967.28/70,787.40
  6. Step 6: Final answer
    x = 55,999.64

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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.