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Finding the Fourth Proportional to 87,710.94, 121,041.05 and 47,424.71

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Solution

The fourth proportional to 87,710.94, 121,041.05 and 47,424.71 is: 65,446.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.94 : 121,041.05 = 47,424.71 : x
  2. Step 2: Convert to fraction form
    87,710.94/121,041.05 = 47,424.71/x
  3. Step 3: Cross multiply
    87,710.94x = 121,041.05 × 47,424.71
  4. Step 4: Simplify right side
    87,710.94x = 5,740,335,852.02
  5. Step 5: Solve for x
    x = 5,740,335,852.02/87,710.94
  6. Step 6: Final answer
    x = 65,446.06

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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.