Home / 85,840,311.02-128,817,188.13-40,415,096.30

Finding the Fourth Proportional to 85,840,311.02, 128,817,188.13 and 40,415,096.30

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Solution

The fourth proportional to 85,840,311.02, 128,817,188.13 and 40,415,096.30 is: 60,649,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,311.02 : 128,817,188.13 = 40,415,096.30 : x
  2. Step 2: Convert to fraction form
    85,840,311.02/128,817,188.13 = 40,415,096.30/x
  3. Step 3: Cross multiply
    85,840,311.02x = 128,817,188.13 × 40,415,096.30
  4. Step 4: Simplify right side
    85,840,311.02x = 5,206,159,063,369,166
  5. Step 5: Solve for x
    x = 5,206,159,063,369,166/85,840,311.02
  6. Step 6: Final answer
    x = 60,649,349.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.