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Finding the Fourth Proportional to 76,266.90, 114,400.35 and 20,862.90

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Solution

The fourth proportional to 76,266.90, 114,400.35 and 20,862.90 is: 31,294.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,266.90 : 114,400.35 = 20,862.90 : x
  2. Step 2: Convert to fraction form
    76,266.90/114,400.35 = 20,862.90/x
  3. Step 3: Cross multiply
    76,266.90x = 114,400.35 × 20,862.90
  4. Step 4: Simplify right side
    76,266.90x = 2,386,723,062.02
  5. Step 5: Solve for x
    x = 2,386,723,062.02/76,266.90
  6. Step 6: Final answer
    x = 31,294.35

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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.