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Finding the Fourth Proportional to 72,588.25, 100,180.65 and 45,730.31

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Solution

The fourth proportional to 72,588.25, 100,180.65 and 45,730.31 is: 63,113.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,588.25 : 100,180.65 = 45,730.31 : x
  2. Step 2: Convert to fraction form
    72,588.25/100,180.65 = 45,730.31/x
  3. Step 3: Cross multiply
    72,588.25x = 100,180.65 × 45,730.31
  4. Step 4: Simplify right side
    72,588.25x = 4,581,292,180.50
  5. Step 5: Solve for x
    x = 4,581,292,180.50/72,588.25
  6. Step 6: Final answer
    x = 63,113.41

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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.