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Finding the Fourth Proportional to 64,803.80, 97,205.70 and 60,138.20

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Solution

The fourth proportional to 64,803.80, 97,205.70 and 60,138.20 is: 90,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,803.80 : 97,205.70 = 60,138.20 : x
  2. Step 2: Convert to fraction form
    64,803.80/97,205.70 = 60,138.20/x
  3. Step 3: Cross multiply
    64,803.80x = 97,205.70 × 60,138.20
  4. Step 4: Simplify right side
    64,803.80x = 5,845,775,827.74
  5. Step 5: Solve for x
    x = 5,845,775,827.74/64,803.80
  6. Step 6: Final answer
    x = 90,207.30

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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.