Home / 90,319.66-124,495.86-61,238.61

Finding the Fourth Proportional to 90,319.66, 124,495.86 and 61,238.61

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Solution

The fourth proportional to 90,319.66, 124,495.86 and 61,238.61 is: 84,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.66 : 124,495.86 = 61,238.61 : x
  2. Step 2: Convert to fraction form
    90,319.66/124,495.86 = 61,238.61/x
  3. Step 3: Cross multiply
    90,319.66x = 124,495.86 × 61,238.61
  4. Step 4: Simplify right side
    90,319.66x = 7,623,953,124.42
  5. Step 5: Solve for x
    x = 7,623,953,124.42/90,319.66
  6. Step 6: Final answer
    x = 84,410.78

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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.