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Finding the Fourth Proportional to 72,746.81, 100,362.10 and 53,672.36

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Solution

The fourth proportional to 72,746.81, 100,362.10 and 53,672.36 is: 74,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,746.81 : 100,362.10 = 53,672.36 : x
  2. Step 2: Convert to fraction form
    72,746.81/100,362.10 = 53,672.36/x
  3. Step 3: Cross multiply
    72,746.81x = 100,362.10 × 53,672.36
  4. Step 4: Simplify right side
    72,746.81x = 5,386,670,493.19
  5. Step 5: Solve for x
    x = 5,386,670,493.19/72,746.81
  6. Step 6: Final answer
    x = 74,046.83

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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.