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Finding the Fourth Proportional to 52,391.76, 78,587.70 and 12,948.27

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Solution

The fourth proportional to 52,391.76, 78,587.70 and 12,948.27 is: 19,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,391.76 : 78,587.70 = 12,948.27 : x
  2. Step 2: Convert to fraction form
    52,391.76/78,587.70 = 12,948.27/x
  3. Step 3: Cross multiply
    52,391.76x = 78,587.70 × 12,948.27
  4. Step 4: Simplify right side
    52,391.76x = 1,017,574,758.28
  5. Step 5: Solve for x
    x = 1,017,574,758.28/52,391.76
  6. Step 6: Final answer
    x = 19,422.42

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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.