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Finding the Fourth Proportional to 72,951.68, 100,673.16 and 39,417.68

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Solution

The fourth proportional to 72,951.68, 100,673.16 and 39,417.68 is: 54,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.68 : 100,673.16 = 39,417.68 : x
  2. Step 2: Convert to fraction form
    72,951.68/100,673.16 = 39,417.68/x
  3. Step 3: Cross multiply
    72,951.68x = 100,673.16 × 39,417.68
  4. Step 4: Simplify right side
    72,951.68x = 3,968,302,405.47
  5. Step 5: Solve for x
    x = 3,968,302,405.47/72,951.68
  6. Step 6: Final answer
    x = 54,396.31

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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.