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Finding the Fourth Proportional to 89,079.80, 133,619.70 and 47,607.80

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Solution

The fourth proportional to 89,079.80, 133,619.70 and 47,607.80 is: 71,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,079.80 : 133,619.70 = 47,607.80 : x
  2. Step 2: Convert to fraction form
    89,079.80/133,619.70 = 47,607.80/x
  3. Step 3: Cross multiply
    89,079.80x = 133,619.70 × 47,607.80
  4. Step 4: Simplify right side
    89,079.80x = 6,361,339,953.66
  5. Step 5: Solve for x
    x = 6,361,339,953.66/89,079.80
  6. Step 6: Final answer
    x = 71,411.70

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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.