Home / 99,336.50-137,081.48-56,319.96

Finding the Fourth Proportional to 99,336.50, 137,081.48 and 56,319.96

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Solution

The fourth proportional to 99,336.50, 137,081.48 and 56,319.96 is: 77,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,336.50 : 137,081.48 = 56,319.96 : x
  2. Step 2: Convert to fraction form
    99,336.50/137,081.48 = 56,319.96/x
  3. Step 3: Cross multiply
    99,336.50x = 137,081.48 × 56,319.96
  4. Step 4: Simplify right side
    99,336.50x = 7,720,423,702.80
  5. Step 5: Solve for x
    x = 7,720,423,702.80/99,336.50
  6. Step 6: Final answer
    x = 77,719.91

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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.