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Finding the Fourth Proportional to 64,987.20, 97,480.80 and 45,960.30

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Solution

The fourth proportional to 64,987.20, 97,480.80 and 45,960.30 is: 68,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.20 : 97,480.80 = 45,960.30 : x
  2. Step 2: Convert to fraction form
    64,987.20/97,480.80 = 45,960.30/x
  3. Step 3: Cross multiply
    64,987.20x = 97,480.80 × 45,960.30
  4. Step 4: Simplify right side
    64,987.20x = 4,480,246,812.24
  5. Step 5: Solve for x
    x = 4,480,246,812.24/64,987.20
  6. Step 6: Final answer
    x = 68,940.45

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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.