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Finding the Fourth Proportional to 64,694.76, 97,035.72 and 20,320.32

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Solution

The fourth proportional to 64,694.76, 97,035.72 and 20,320.32 is: 30,478.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,694.76 : 97,035.72 = 20,320.32 : x
  2. Step 2: Convert to fraction form
    64,694.76/97,035.72 = 20,320.32/x
  3. Step 3: Cross multiply
    64,694.76x = 97,035.72 × 20,320.32
  4. Step 4: Simplify right side
    64,694.76x = 1,971,796,881.83
  5. Step 5: Solve for x
    x = 1,971,796,881.83/64,694.76
  6. Step 6: Final answer
    x = 30,478.46

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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.