Home / 78,477.13-108,299.21-42,667.91

Finding the Fourth Proportional to 78,477.13, 108,299.21 and 42,667.91

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Solution

The fourth proportional to 78,477.13, 108,299.21 and 42,667.91 is: 58,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,477.13 : 108,299.21 = 42,667.91 : x
  2. Step 2: Convert to fraction form
    78,477.13/108,299.21 = 42,667.91/x
  3. Step 3: Cross multiply
    78,477.13x = 108,299.21 × 42,667.91
  4. Step 4: Simplify right side
    78,477.13x = 4,620,901,625.83
  5. Step 5: Solve for x
    x = 4,620,901,625.83/78,477.13
  6. Step 6: Final answer
    x = 58,882.14

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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.