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Finding the Fourth Proportional to 98,269.91, 135,612.93 and 55,830.77

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Solution

The fourth proportional to 98,269.91, 135,612.93 and 55,830.77 is: 77,046.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,269.91 : 135,612.93 = 55,830.77 : x
  2. Step 2: Convert to fraction form
    98,269.91/135,612.93 = 55,830.77/x
  3. Step 3: Cross multiply
    98,269.91x = 135,612.93 × 55,830.77
  4. Step 4: Simplify right side
    98,269.91x = 7,571,374,303.86
  5. Step 5: Solve for x
    x = 7,571,374,303.86/98,269.91
  6. Step 6: Final answer
    x = 77,046.72

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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.