Home / 85,123,863.60-127,685,795.40-42,077,142.60

Finding the Fourth Proportional to 85,123,863.60, 127,685,795.40 and 42,077,142.60

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Solution

The fourth proportional to 85,123,863.60, 127,685,795.40 and 42,077,142.60 is: 63,115,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,123,863.60 : 127,685,795.40 = 42,077,142.60 : x
  2. Step 2: Convert to fraction form
    85,123,863.60/127,685,795.40 = 42,077,142.60/x
  3. Step 3: Cross multiply
    85,123,863.60x = 127,685,795.40 × 42,077,142.60
  4. Step 4: Simplify right side
    85,123,863.60x = 5,372,653,421,040,224
  5. Step 5: Solve for x
    x = 5,372,653,421,040,224/85,123,863.60
  6. Step 6: Final answer
    x = 63,115,713.90

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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.