Home / 52,430.28-78,644.94-21,258.12

Finding the Fourth Proportional to 52,430.28, 78,644.94 and 21,258.12

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Solution

The fourth proportional to 52,430.28, 78,644.94 and 21,258.12 is: 31,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,430.28 : 78,644.94 = 21,258.12 : x
  2. Step 2: Convert to fraction form
    52,430.28/78,644.94 = 21,258.12/x
  3. Step 3: Cross multiply
    52,430.28x = 78,644.94 × 21,258.12
  4. Step 4: Simplify right side
    52,430.28x = 1,671,843,571.91
  5. Step 5: Solve for x
    x = 1,671,843,571.91/52,430.28
  6. Step 6: Final answer
    x = 31,886.99

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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.