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Finding the Fourth Proportional to 96,580, 133,280.88 and 56,321.68

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Solution

The fourth proportional to 96,580, 133,280.88 and 56,321.68 is: 77,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,580 : 133,280.88 = 56,321.68 : x
  2. Step 2: Convert to fraction form
    96,580/133,280.88 = 56,321.68/x
  3. Step 3: Cross multiply
    96,580x = 133,280.88 × 56,321.68
  4. Step 4: Simplify right side
    96,580x = 7,506,603,073.48
  5. Step 5: Solve for x
    x = 7,506,603,073.48/96,580
  6. Step 6: Final answer
    x = 77,724.20

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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.