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Finding the Fourth Proportional to 64,720.08, 97,093.08 and 20,358

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Solution

The fourth proportional to 64,720.08, 97,093.08 and 20,358 is: 30,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,720.08 : 97,093.08 = 20,358 : x
  2. Step 2: Convert to fraction form
    64,720.08/97,093.08 = 20,358/x
  3. Step 3: Cross multiply
    64,720.08x = 97,093.08 × 20,358
  4. Step 4: Simplify right side
    64,720.08x = 1,976,620,922.64
  5. Step 5: Solve for x
    x = 1,976,620,922.64/64,720.08
  6. Step 6: Final answer
    x = 30,541.08

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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.