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Finding the Fourth Proportional to 99,017.88, 148,565.70 and 43,575

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Solution

The fourth proportional to 99,017.88, 148,565.70 and 43,575 is: 65,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,017.88 : 148,565.70 = 43,575 : x
  2. Step 2: Convert to fraction form
    99,017.88/148,565.70 = 43,575/x
  3. Step 3: Cross multiply
    99,017.88x = 148,565.70 × 43,575
  4. Step 4: Simplify right side
    99,017.88x = 6,473,750,377.50
  5. Step 5: Solve for x
    x = 6,473,750,377.50/99,017.88
  6. Step 6: Final answer
    x = 65,379.61

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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.