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Finding the Fourth Proportional to 72,477.20, 108,715.80 and 62,454.80

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Solution

The fourth proportional to 72,477.20, 108,715.80 and 62,454.80 is: 93,682.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477.20 : 108,715.80 = 62,454.80 : x
  2. Step 2: Convert to fraction form
    72,477.20/108,715.80 = 62,454.80/x
  3. Step 3: Cross multiply
    72,477.20x = 108,715.80 × 62,454.80
  4. Step 4: Simplify right side
    72,477.20x = 6,789,823,545.84
  5. Step 5: Solve for x
    x = 6,789,823,545.84/72,477.20
  6. Step 6: Final answer
    x = 93,682.20

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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.