Home / 85,082.10-127,667.07-40,699.86

Finding the Fourth Proportional to 85,082.10, 127,667.07 and 40,699.86

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Solution

The fourth proportional to 85,082.10, 127,667.07 and 40,699.86 is: 61,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,082.10 : 127,667.07 = 40,699.86 : x
  2. Step 2: Convert to fraction form
    85,082.10/127,667.07 = 40,699.86/x
  3. Step 3: Cross multiply
    85,082.10x = 127,667.07 × 40,699.86
  4. Step 4: Simplify right side
    85,082.10x = 5,196,031,875.61
  5. Step 5: Solve for x
    x = 5,196,031,875.61/85,082.10
  6. Step 6: Final answer
    x = 61,070.80

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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.