Home / 78,691.48-118,035.09-19,526.44

Finding the Fourth Proportional to 78,691.48, 118,035.09 and 19,526.44

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Solution

The fourth proportional to 78,691.48, 118,035.09 and 19,526.44 is: 29,289.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,691.48 : 118,035.09 = 19,526.44 : x
  2. Step 2: Convert to fraction form
    78,691.48/118,035.09 = 19,526.44/x
  3. Step 3: Cross multiply
    78,691.48x = 118,035.09 × 19,526.44
  4. Step 4: Simplify right side
    78,691.48x = 2,304,805,102.78
  5. Step 5: Solve for x
    x = 2,304,805,102.78/78,691.48
  6. Step 6: Final answer
    x = 29,289.13

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1.5x scale

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.