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Finding the Fourth Proportional to 77,802.73, 107,369.90 and 47,587.51

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Solution

The fourth proportional to 77,802.73, 107,369.90 and 47,587.51 is: 65,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,802.73 : 107,369.90 = 47,587.51 : x
  2. Step 2: Convert to fraction form
    77,802.73/107,369.90 = 47,587.51/x
  3. Step 3: Cross multiply
    77,802.73x = 107,369.90 × 47,587.51
  4. Step 4: Simplify right side
    77,802.73x = 5,109,466,189.95
  5. Step 5: Solve for x
    x = 5,109,466,189.95/77,802.73
  6. Step 6: Final answer
    x = 65,672.07

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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.