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Finding the Fourth Proportional to 101,030.04, 151,528.74 and 47,721.90

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Solution

The fourth proportional to 101,030.04, 151,528.74 and 47,721.90 is: 71,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,030.04 : 151,528.74 = 47,721.90 : x
  2. Step 2: Convert to fraction form
    101,030.04/151,528.74 = 47,721.90/x
  3. Step 3: Cross multiply
    101,030.04x = 151,528.74 × 47,721.90
  4. Step 4: Simplify right side
    101,030.04x = 7,231,239,377.41
  5. Step 5: Solve for x
    x = 7,231,239,377.41/101,030.04
  6. Step 6: Final answer
    x = 71,575.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.