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Finding the Fourth Proportional to 52,295.40, 78,475.50 and 21,130.92

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Solution

The fourth proportional to 52,295.40, 78,475.50 and 21,130.92 is: 31,709.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,295.40 : 78,475.50 = 21,130.92 : x
  2. Step 2: Convert to fraction form
    52,295.40/78,475.50 = 21,130.92/x
  3. Step 3: Cross multiply
    52,295.40x = 78,475.50 × 21,130.92
  4. Step 4: Simplify right side
    52,295.40x = 1,658,259,512.46
  5. Step 5: Solve for x
    x = 1,658,259,512.46/52,295.40
  6. Step 6: Final answer
    x = 31,709.47

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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.