Home / 53,402.09-80,115.28-28,428.98

Finding the Fourth Proportional to 53,402.09, 80,115.28 and 28,428.98

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Solution

The fourth proportional to 53,402.09, 80,115.28 and 28,428.98 is: 42,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,402.09 : 80,115.28 = 28,428.98 : x
  2. Step 2: Convert to fraction form
    53,402.09/80,115.28 = 28,428.98/x
  3. Step 3: Cross multiply
    53,402.09x = 80,115.28 × 28,428.98
  4. Step 4: Simplify right side
    53,402.09x = 2,277,595,221.17
  5. Step 5: Solve for x
    x = 2,277,595,221.17/53,402.09
  6. Step 6: Final answer
    x = 42,649.93

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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.