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Finding the Fourth Proportional to 72,605.50, 108,806.10 and 57,748.48

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Solution

The fourth proportional to 72,605.50, 108,806.10 and 57,748.48 is: 86,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.50 : 108,806.10 = 57,748.48 : x
  2. Step 2: Convert to fraction form
    72,605.50/108,806.10 = 57,748.48/x
  3. Step 3: Cross multiply
    72,605.50x = 108,806.10 × 57,748.48
  4. Step 4: Simplify right side
    72,605.50x = 6,283,386,889.73
  5. Step 5: Solve for x
    x = 6,283,386,889.73/72,605.50
  6. Step 6: Final answer
    x = 86,541.47

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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.