Home / 77,647.29-107,179.65-53,805.35

Finding the Fourth Proportional to 77,647.29, 107,179.65 and 53,805.35

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Solution

The fourth proportional to 77,647.29, 107,179.65 and 53,805.35 is: 74,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,647.29 : 107,179.65 = 53,805.35 : x
  2. Step 2: Convert to fraction form
    77,647.29/107,179.65 = 53,805.35/x
  3. Step 3: Cross multiply
    77,647.29x = 107,179.65 × 53,805.35
  4. Step 4: Simplify right side
    77,647.29x = 5,766,838,045.23
  5. Step 5: Solve for x
    x = 5,766,838,045.23/77,647.29
  6. Step 6: Final answer
    x = 74,269.66

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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.