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Finding the Fourth Proportional to 99,672.90, 149,552.55 and 47,055.30

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Solution

The fourth proportional to 99,672.90, 149,552.55 and 47,055.30 is: 70,603.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,672.90 : 149,552.55 = 47,055.30 : x
  2. Step 2: Convert to fraction form
    99,672.90/149,552.55 = 47,055.30/x
  3. Step 3: Cross multiply
    99,672.90x = 149,552.55 × 47,055.30
  4. Step 4: Simplify right side
    99,672.90x = 7,037,240,106.02
  5. Step 5: Solve for x
    x = 7,037,240,106.02/99,672.90
  6. Step 6: Final answer
    x = 70,603.34

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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.