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Finding the Fourth Proportional to 73,421.61, 101,321.15 and 39,887.61

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Solution

The fourth proportional to 73,421.61, 101,321.15 and 39,887.61 is: 55,044.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,421.61 : 101,321.15 = 39,887.61 : x
  2. Step 2: Convert to fraction form
    73,421.61/101,321.15 = 39,887.61/x
  3. Step 3: Cross multiply
    73,421.61x = 101,321.15 × 39,887.61
  4. Step 4: Simplify right side
    73,421.61x = 4,041,458,316.51
  5. Step 5: Solve for x
    x = 4,041,458,316.51/73,421.61
  6. Step 6: Final answer
    x = 55,044.53

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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.