Home / 78,007.83-107,616.63-45,726.09

Finding the Fourth Proportional to 78,007.83, 107,616.63 and 45,726.09

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Solution

The fourth proportional to 78,007.83, 107,616.63 and 45,726.09 is: 63,081.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,007.83 : 107,616.63 = 45,726.09 : x
  2. Step 2: Convert to fraction form
    78,007.83/107,616.63 = 45,726.09/x
  3. Step 3: Cross multiply
    78,007.83x = 107,616.63 × 45,726.09
  4. Step 4: Simplify right side
    78,007.83x = 4,920,887,476.79
  5. Step 5: Solve for x
    x = 4,920,887,476.79/78,007.83
  6. Step 6: Final answer
    x = 63,081.97

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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.