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Finding the Fourth Proportional to 64,315.40, 96,473.10 and 43,320.20

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Solution

The fourth proportional to 64,315.40, 96,473.10 and 43,320.20 is: 64,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,315.40 : 96,473.10 = 43,320.20 : x
  2. Step 2: Convert to fraction form
    64,315.40/96,473.10 = 43,320.20/x
  3. Step 3: Cross multiply
    64,315.40x = 96,473.10 × 43,320.20
  4. Step 4: Simplify right side
    64,315.40x = 4,179,233,986.62
  5. Step 5: Solve for x
    x = 4,179,233,986.62/64,315.40
  6. Step 6: Final answer
    x = 64,980.30

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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.