Home / 85,803,682.34-128,533,199.06-39,680,902.10

Finding the Fourth Proportional to 85,803,682.34, 128,533,199.06 and 39,680,902.10

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Solution

The fourth proportional to 85,803,682.34, 128,533,199.06 and 39,680,902.10 is: 59,441,659.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,682.34 : 128,533,199.06 = 39,680,902.10 : x
  2. Step 2: Convert to fraction form
    85,803,682.34/128,533,199.06 = 39,680,902.10/x
  3. Step 3: Cross multiply
    85,803,682.34x = 128,533,199.06 × 39,680,902.10
  4. Step 4: Simplify right side
    85,803,682.34x = 5,100,313,288,499,672
  5. Step 5: Solve for x
    x = 5,100,313,288,499,672/85,803,682.34
  6. Step 6: Final answer
    x = 59,441,659.72

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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.