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Finding the Fourth Proportional to 72,671.40, 109,007.10 and 63,048.60

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Solution

The fourth proportional to 72,671.40, 109,007.10 and 63,048.60 is: 94,572.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,671.40 : 109,007.10 = 63,048.60 : x
  2. Step 2: Convert to fraction form
    72,671.40/109,007.10 = 63,048.60/x
  3. Step 3: Cross multiply
    72,671.40x = 109,007.10 × 63,048.60
  4. Step 4: Simplify right side
    72,671.40x = 6,872,745,045.06
  5. Step 5: Solve for x
    x = 6,872,745,045.06/72,671.40
  6. Step 6: Final answer
    x = 94,572.90

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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.