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Finding the Fourth Proportional to 64,984.83, 97,480.71 and 20,615.13

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Solution

The fourth proportional to 64,984.83, 97,480.71 and 20,615.13 is: 30,923.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.83 : 97,480.71 = 20,615.13 : x
  2. Step 2: Convert to fraction form
    64,984.83/97,480.71 = 20,615.13/x
  3. Step 3: Cross multiply
    64,984.83x = 97,480.71 × 20,615.13
  4. Step 4: Simplify right side
    64,984.83x = 2,009,577,509.14
  5. Step 5: Solve for x
    x = 2,009,577,509.14/64,984.83
  6. Step 6: Final answer
    x = 30,923.79

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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.