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Finding the Fourth Proportional to 64,959.64, 97,428.12 and 18,216.16

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Solution

The fourth proportional to 64,959.64, 97,428.12 and 18,216.16 is: 27,321.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.64 : 97,428.12 = 18,216.16 : x
  2. Step 2: Convert to fraction form
    64,959.64/97,428.12 = 18,216.16/x
  3. Step 3: Cross multiply
    64,959.64x = 97,428.12 × 18,216.16
  4. Step 4: Simplify right side
    64,959.64x = 1,774,766,222.42
  5. Step 5: Solve for x
    x = 1,774,766,222.42/64,959.64
  6. Step 6: Final answer
    x = 27,321.06

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1.5x scale

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.