Home / 78,859.30-118,094.55-52,420.90

Finding the Fourth Proportional to 78,859.30, 118,094.55 and 52,420.90

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Solution

The fourth proportional to 78,859.30, 118,094.55 and 52,420.90 is: 78,502.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.30 : 118,094.55 = 52,420.90 : x
  2. Step 2: Convert to fraction form
    78,859.30/118,094.55 = 52,420.90/x
  3. Step 3: Cross multiply
    78,859.30x = 118,094.55 × 52,420.90
  4. Step 4: Simplify right side
    78,859.30x = 6,190,622,596.10
  5. Step 5: Solve for x
    x = 6,190,622,596.10/78,859.30
  6. Step 6: Final answer
    x = 78,502.12

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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.