Home / 78,754.41-118,132.04-19,590.08

Finding the Fourth Proportional to 78,754.41, 118,132.04 and 19,590.08

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Solution

The fourth proportional to 78,754.41, 118,132.04 and 19,590.08 is: 29,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,754.41 : 118,132.04 = 19,590.08 : x
  2. Step 2: Convert to fraction form
    78,754.41/118,132.04 = 19,590.08/x
  3. Step 3: Cross multiply
    78,754.41x = 118,132.04 × 19,590.08
  4. Step 4: Simplify right side
    78,754.41x = 2,314,216,114.16
  5. Step 5: Solve for x
    x = 2,314,216,114.16/78,754.41
  6. Step 6: Final answer
    x = 29,385.23

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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.