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Finding the Fourth Proportional to 98,963, 136,577.58 and 54,259.64

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Solution

The fourth proportional to 98,963, 136,577.58 and 54,259.64 is: 74,883.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,963 : 136,577.58 = 54,259.64 : x
  2. Step 2: Convert to fraction form
    98,963/136,577.58 = 54,259.64/x
  3. Step 3: Cross multiply
    98,963x = 136,577.58 × 54,259.64
  4. Step 4: Simplify right side
    98,963x = 7,410,650,322.87
  5. Step 5: Solve for x
    x = 7,410,650,322.87/98,963
  6. Step 6: Final answer
    x = 74,883.04

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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.