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Finding the Fourth Proportional to 90,348, 124,676.88 and 52,109.13

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Solution

The fourth proportional to 90,348, 124,676.88 and 52,109.13 is: 71,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,348 : 124,676.88 = 52,109.13 : x
  2. Step 2: Convert to fraction form
    90,348/124,676.88 = 52,109.13/x
  3. Step 3: Cross multiply
    90,348x = 124,676.88 × 52,109.13
  4. Step 4: Simplify right side
    90,348x = 6,496,803,747.91
  5. Step 5: Solve for x
    x = 6,496,803,747.91/90,348
  6. Step 6: Final answer
    x = 71,908.66

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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.