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Finding the Fourth Proportional to 61,215.70, 91,823.55 and 41,386.90

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Solution

The fourth proportional to 61,215.70, 91,823.55 and 41,386.90 is: 62,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,215.70 : 91,823.55 = 41,386.90 : x
  2. Step 2: Convert to fraction form
    61,215.70/91,823.55 = 41,386.90/x
  3. Step 3: Cross multiply
    61,215.70x = 91,823.55 × 41,386.90
  4. Step 4: Simplify right side
    61,215.70x = 3,800,292,081.50
  5. Step 5: Solve for x
    x = 3,800,292,081.50/61,215.70
  6. Step 6: Final answer
    x = 62,080.35

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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.