Home / 91,565.15-126,345.30-51,280.61

Finding the Fourth Proportional to 91,565.15, 126,345.30 and 51,280.61

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Solution

The fourth proportional to 91,565.15, 126,345.30 and 51,280.61 is: 70,759.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,565.15 : 126,345.30 = 51,280.61 : x
  2. Step 2: Convert to fraction form
    91,565.15/126,345.30 = 51,280.61/x
  3. Step 3: Cross multiply
    91,565.15x = 126,345.30 × 51,280.61
  4. Step 4: Simplify right side
    91,565.15x = 6,479,064,054.63
  5. Step 5: Solve for x
    x = 6,479,064,054.63/91,565.15
  6. Step 6: Final answer
    x = 70,759.06

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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.