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Finding the Fourth Proportional to 77,572.15, 116,364.90 and 21,412.27

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Solution

The fourth proportional to 77,572.15, 116,364.90 and 21,412.27 is: 32,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,572.15 : 116,364.90 = 21,412.27 : x
  2. Step 2: Convert to fraction form
    77,572.15/116,364.90 = 21,412.27/x
  3. Step 3: Cross multiply
    77,572.15x = 116,364.90 × 21,412.27
  4. Step 4: Simplify right side
    77,572.15x = 2,491,636,366.41
  5. Step 5: Solve for x
    x = 2,491,636,366.41/77,572.15
  6. Step 6: Final answer
    x = 32,120.24

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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.