Home / 77,091.90-106,263.75-62,920.38

Finding the Fourth Proportional to 77,091.90, 106,263.75 and 62,920.38

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Solution

The fourth proportional to 77,091.90, 106,263.75 and 62,920.38 is: 86,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,091.90 : 106,263.75 = 62,920.38 : x
  2. Step 2: Convert to fraction form
    77,091.90/106,263.75 = 62,920.38/x
  3. Step 3: Cross multiply
    77,091.90x = 106,263.75 × 62,920.38
  4. Step 4: Simplify right side
    77,091.90x = 6,686,155,530.23
  5. Step 5: Solve for x
    x = 6,686,155,530.23/77,091.90
  6. Step 6: Final answer
    x = 86,729.68

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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.