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Finding the Fourth Proportional to 90,427.84, 124,805.76 and 52,720.48

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Solution

The fourth proportional to 90,427.84, 124,805.76 and 52,720.48 is: 72,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,427.84 : 124,805.76 = 52,720.48 : x
  2. Step 2: Convert to fraction form
    90,427.84/124,805.76 = 52,720.48/x
  3. Step 3: Cross multiply
    90,427.84x = 124,805.76 × 52,720.48
  4. Step 4: Simplify right side
    90,427.84x = 6,579,819,573.96
  5. Step 5: Solve for x
    x = 6,579,819,573.96/90,427.84
  6. Step 6: Final answer
    x = 72,763.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.