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Finding the Fourth Proportional to 72,271.60, 108,263.40 and 63,612.40

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Solution

The fourth proportional to 72,271.60, 108,263.40 and 63,612.40 is: 95,291.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,271.60 : 108,263.40 = 63,612.40 : x
  2. Step 2: Convert to fraction form
    72,271.60/108,263.40 = 63,612.40/x
  3. Step 3: Cross multiply
    72,271.60x = 108,263.40 × 63,612.40
  4. Step 4: Simplify right side
    72,271.60x = 6,886,894,706.16
  5. Step 5: Solve for x
    x = 6,886,894,706.16/72,271.60
  6. Step 6: Final answer
    x = 95,291.85

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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.