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Finding the Fourth Proportional to 90,866.70, 125,325 and 59,045.82

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Solution

The fourth proportional to 90,866.70, 125,325 and 59,045.82 is: 81,437.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,866.70 : 125,325 = 59,045.82 : x
  2. Step 2: Convert to fraction form
    90,866.70/125,325 = 59,045.82/x
  3. Step 3: Cross multiply
    90,866.70x = 125,325 × 59,045.82
  4. Step 4: Simplify right side
    90,866.70x = 7,399,917,391.50
  5. Step 5: Solve for x
    x = 7,399,917,391.50/90,866.70
  6. Step 6: Final answer
    x = 81,437.07

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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.