Home / 52,705.19-78,931.10-30,147.48

Finding the Fourth Proportional to 52,705.19, 78,931.10 and 30,147.48

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Solution

The fourth proportional to 52,705.19, 78,931.10 and 30,147.48 is: 45,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,705.19 : 78,931.10 = 30,147.48 : x
  2. Step 2: Convert to fraction form
    52,705.19/78,931.10 = 30,147.48/x
  3. Step 3: Cross multiply
    52,705.19x = 78,931.10 × 30,147.48
  4. Step 4: Simplify right side
    52,705.19x = 2,379,573,834.00
  5. Step 5: Solve for x
    x = 2,379,573,834.00/52,705.19
  6. Step 6: Final answer
    x = 45,148.76

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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.