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Finding the Fourth Proportional to 64,187.40, 96,281.10 and 19,810.20

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Solution

The fourth proportional to 64,187.40, 96,281.10 and 19,810.20 is: 29,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,187.40 : 96,281.10 = 19,810.20 : x
  2. Step 2: Convert to fraction form
    64,187.40/96,281.10 = 19,810.20/x
  3. Step 3: Cross multiply
    64,187.40x = 96,281.10 × 19,810.20
  4. Step 4: Simplify right side
    64,187.40x = 1,907,347,847.22
  5. Step 5: Solve for x
    x = 1,907,347,847.22/64,187.40
  6. Step 6: Final answer
    x = 29,715.30

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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.