Home / 52,415.40-78,632.70-21,253.80

Finding the Fourth Proportional to 52,415.40, 78,632.70 and 21,253.80

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Solution

The fourth proportional to 52,415.40, 78,632.70 and 21,253.80 is: 31,884.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,415.40 : 78,632.70 = 21,253.80 : x
  2. Step 2: Convert to fraction form
    52,415.40/78,632.70 = 21,253.80/x
  3. Step 3: Cross multiply
    52,415.40x = 78,632.70 × 21,253.80
  4. Step 4: Simplify right side
    52,415.40x = 1,671,243,679.26
  5. Step 5: Solve for x
    x = 1,671,243,679.26/52,415.40
  6. Step 6: Final answer
    x = 31,884.59

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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.