Home / 87,856.90-121,242.01-47,569.83

Finding the Fourth Proportional to 87,856.90, 121,242.01 and 47,569.83

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Solution

The fourth proportional to 87,856.90, 121,242.01 and 47,569.83 is: 65,646.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.90 : 121,242.01 = 47,569.83 : x
  2. Step 2: Convert to fraction form
    87,856.90/121,242.01 = 47,569.83/x
  3. Step 3: Cross multiply
    87,856.90x = 121,242.01 × 47,569.83
  4. Step 4: Simplify right side
    87,856.90x = 5,767,461,804.56
  5. Step 5: Solve for x
    x = 5,767,461,804.56/87,856.90
  6. Step 6: Final answer
    x = 65,646.09

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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.