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Finding the Fourth Proportional to 90,396, 124,746.48 and 52,670.25

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Solution

The fourth proportional to 90,396, 124,746.48 and 52,670.25 is: 72,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,396 : 124,746.48 = 52,670.25 : x
  2. Step 2: Convert to fraction form
    90,396/124,746.48 = 52,670.25/x
  3. Step 3: Cross multiply
    90,396x = 124,746.48 × 52,670.25
  4. Step 4: Simplify right side
    90,396x = 6,570,428,288.22
  5. Step 5: Solve for x
    x = 6,570,428,288.22/90,396
  6. Step 6: Final answer
    x = 72,684.95

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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.