Home / 72,714.60-100,343.58-40,885.32

Finding the Fourth Proportional to 72,714.60, 100,343.58 and 40,885.32

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Solution

The fourth proportional to 72,714.60, 100,343.58 and 40,885.32 is: 56,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,714.60 : 100,343.58 = 40,885.32 : x
  2. Step 2: Convert to fraction form
    72,714.60/100,343.58 = 40,885.32/x
  3. Step 3: Cross multiply
    72,714.60x = 100,343.58 × 40,885.32
  4. Step 4: Simplify right side
    72,714.60x = 4,102,579,378.25
  5. Step 5: Solve for x
    x = 4,102,579,378.25/72,714.60
  6. Step 6: Final answer
    x = 56,420.30

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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.