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Finding the Fourth Proportional to 72,544, 100,111.08 and 42,350.08

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Solution

The fourth proportional to 72,544, 100,111.08 and 42,350.08 is: 58,443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,544 : 100,111.08 = 42,350.08 : x
  2. Step 2: Convert to fraction form
    72,544/100,111.08 = 42,350.08/x
  3. Step 3: Cross multiply
    72,544x = 100,111.08 × 42,350.08
  4. Step 4: Simplify right side
    72,544x = 4,239,712,246.89
  5. Step 5: Solve for x
    x = 4,239,712,246.89/72,544
  6. Step 6: Final answer
    x = 58,443.32

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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.