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Finding the Fourth Proportional to 74,429.90, 111,774.45 and 39,437.90

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Solution

The fourth proportional to 74,429.90, 111,774.45 and 39,437.90 is: 59,225.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,429.90 : 111,774.45 = 39,437.90 : x
  2. Step 2: Convert to fraction form
    74,429.90/111,774.45 = 39,437.90/x
  3. Step 3: Cross multiply
    74,429.90x = 111,774.45 × 39,437.90
  4. Step 4: Simplify right side
    74,429.90x = 4,408,149,581.66
  5. Step 5: Solve for x
    x = 4,408,149,581.66/74,429.90
  6. Step 6: Final answer
    x = 59,225.52

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1.5x scale

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.