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Finding the Fourth Proportional to 65,321.16, 97,979.58 and 28,385.16

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Solution

The fourth proportional to 65,321.16, 97,979.58 and 28,385.16 is: 42,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,321.16 : 97,979.58 = 28,385.16 : x
  2. Step 2: Convert to fraction form
    65,321.16/97,979.58 = 28,385.16/x
  3. Step 3: Cross multiply
    65,321.16x = 97,979.58 × 28,385.16
  4. Step 4: Simplify right side
    65,321.16x = 2,781,166,055.03
  5. Step 5: Solve for x
    x = 2,781,166,055.03/65,321.16
  6. Step 6: Final answer
    x = 42,576.80

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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.