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Finding the Fourth Proportional to 72,453.20, 108,679.80 and 62,430.80

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Solution

The fourth proportional to 72,453.20, 108,679.80 and 62,430.80 is: 93,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,453.20 : 108,679.80 = 62,430.80 : x
  2. Step 2: Convert to fraction form
    72,453.20/108,679.80 = 62,430.80/x
  3. Step 3: Cross multiply
    72,453.20x = 108,679.80 × 62,430.80
  4. Step 4: Simplify right side
    72,453.20x = 6,784,966,857.84
  5. Step 5: Solve for x
    x = 6,784,966,857.84/72,453.20
  6. Step 6: Final answer
    x = 93,646.20

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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.