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Finding the Fourth Proportional to 77,552.51, 107,019.63 and 47,388.31

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Solution

The fourth proportional to 77,552.51, 107,019.63 and 47,388.31 is: 65,394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,552.51 : 107,019.63 = 47,388.31 : x
  2. Step 2: Convert to fraction form
    77,552.51/107,019.63 = 47,388.31/x
  3. Step 3: Cross multiply
    77,552.51x = 107,019.63 × 47,388.31
  4. Step 4: Simplify right side
    77,552.51x = 5,071,479,134.98
  5. Step 5: Solve for x
    x = 5,071,479,134.98/77,552.51
  6. Step 6: Final answer
    x = 65,394.14

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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.