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Finding the Fourth Proportional to 65,480.76, 98,270.58 and 52,490

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Solution

The fourth proportional to 65,480.76, 98,270.58 and 52,490 is: 78,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,480.76 : 98,270.58 = 52,490 : x
  2. Step 2: Convert to fraction form
    65,480.76/98,270.58 = 52,490/x
  3. Step 3: Cross multiply
    65,480.76x = 98,270.58 × 52,490
  4. Step 4: Simplify right side
    65,480.76x = 5,158,222,744.20
  5. Step 5: Solve for x
    x = 5,158,222,744.20/65,480.76
  6. Step 6: Final answer
    x = 78,774.63

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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.