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Finding the Fourth Proportional to 73,862.56, 101,930.16 and 40,328.80

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Solution

The fourth proportional to 73,862.56, 101,930.16 and 40,328.80 is: 55,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,862.56 : 101,930.16 = 40,328.80 : x
  2. Step 2: Convert to fraction form
    73,862.56/101,930.16 = 40,328.80/x
  3. Step 3: Cross multiply
    73,862.56x = 101,930.16 × 40,328.80
  4. Step 4: Simplify right side
    73,862.56x = 4,110,721,036.61
  5. Step 5: Solve for x
    x = 4,110,721,036.61/73,862.56
  6. Step 6: Final answer
    x = 55,653.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.