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Finding the Fourth Proportional to 64,937.20, 97,405.80 and 42,818.80

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Solution

The fourth proportional to 64,937.20, 97,405.80 and 42,818.80 is: 64,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,937.20 : 97,405.80 = 42,818.80 : x
  2. Step 2: Convert to fraction form
    64,937.20/97,405.80 = 42,818.80/x
  3. Step 3: Cross multiply
    64,937.20x = 97,405.80 × 42,818.80
  4. Step 4: Simplify right side
    64,937.20x = 4,170,799,469.04
  5. Step 5: Solve for x
    x = 4,170,799,469.04/64,937.20
  6. Step 6: Final answer
    x = 64,228.20

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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.