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Finding the Fourth Proportional to 77,358.30, 116,037.54 and 21,198.90

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Solution

The fourth proportional to 77,358.30, 116,037.54 and 21,198.90 is: 31,798.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,358.30 : 116,037.54 = 21,198.90 : x
  2. Step 2: Convert to fraction form
    77,358.30/116,037.54 = 21,198.90/x
  3. Step 3: Cross multiply
    77,358.30x = 116,037.54 × 21,198.90
  4. Step 4: Simplify right side
    77,358.30x = 2,459,868,206.71
  5. Step 5: Solve for x
    x = 2,459,868,206.71/77,358.30
  6. Step 6: Final answer
    x = 31,798.37

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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.