Home / 90,990.24-125,518.56-62,646.72

Finding the Fourth Proportional to 90,990.24, 125,518.56 and 62,646.72

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Solution

The fourth proportional to 90,990.24, 125,518.56 and 62,646.72 is: 86,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,990.24 : 125,518.56 = 62,646.72 : x
  2. Step 2: Convert to fraction form
    90,990.24/125,518.56 = 62,646.72/x
  3. Step 3: Cross multiply
    90,990.24x = 125,518.56 × 62,646.72
  4. Step 4: Simplify right side
    90,990.24x = 7,863,326,083.12
  5. Step 5: Solve for x
    x = 7,863,326,083.12/90,990.24
  6. Step 6: Final answer
    x = 86,419.45

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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.