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Finding the Fourth Proportional to 84,000.30, 126,000.45 and 63,005.10

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Solution

The fourth proportional to 84,000.30, 126,000.45 and 63,005.10 is: 94,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,000.30 : 126,000.45 = 63,005.10 : x
  2. Step 2: Convert to fraction form
    84,000.30/126,000.45 = 63,005.10/x
  3. Step 3: Cross multiply
    84,000.30x = 126,000.45 × 63,005.10
  4. Step 4: Simplify right side
    84,000.30x = 7,938,670,952.30
  5. Step 5: Solve for x
    x = 7,938,670,952.30/84,000.30
  6. Step 6: Final answer
    x = 94,507.65

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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.