Home / 90,681.86-125,138.48-50,394.58

Finding the Fourth Proportional to 90,681.86, 125,138.48 and 50,394.58

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Solution

The fourth proportional to 90,681.86, 125,138.48 and 50,394.58 is: 69,543.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,681.86 : 125,138.48 = 50,394.58 : x
  2. Step 2: Convert to fraction form
    90,681.86/125,138.48 = 50,394.58/x
  3. Step 3: Cross multiply
    90,681.86x = 125,138.48 × 50,394.58
  4. Step 4: Simplify right side
    90,681.86x = 6,306,301,141.44
  5. Step 5: Solve for x
    x = 6,306,301,141.44/90,681.86
  6. Step 6: Final answer
    x = 69,543.14

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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.