Home / 78,687.24-118,035-34,317.06

Finding the Fourth Proportional to 78,687.24, 118,035 and 34,317.06

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Solution

The fourth proportional to 78,687.24, 118,035 and 34,317.06 is: 51,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,687.24 : 118,035 = 34,317.06 : x
  2. Step 2: Convert to fraction form
    78,687.24/118,035 = 34,317.06/x
  3. Step 3: Cross multiply
    78,687.24x = 118,035 × 34,317.06
  4. Step 4: Simplify right side
    78,687.24x = 4,050,614,177.10
  5. Step 5: Solve for x
    x = 4,050,614,177.10/78,687.24
  6. Step 6: Final answer
    x = 51,477.40

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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.