Home / 77,205.34-115,688.94-52,147.18

Finding the Fourth Proportional to 77,205.34, 115,688.94 and 52,147.18

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Solution

The fourth proportional to 77,205.34, 115,688.94 and 52,147.18 is: 78,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,205.34 : 115,688.94 = 52,147.18 : x
  2. Step 2: Convert to fraction form
    77,205.34/115,688.94 = 52,147.18/x
  3. Step 3: Cross multiply
    77,205.34x = 115,688.94 × 52,147.18
  4. Step 4: Simplify right side
    77,205.34x = 6,032,851,978.19
  5. Step 5: Solve for x
    x = 6,032,851,978.19/77,205.34
  6. Step 6: Final answer
    x = 78,140.35

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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.