Home / 87,903.85-121,307.90-47,617.62

Finding the Fourth Proportional to 87,903.85, 121,307.90 and 47,617.62

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Solution

The fourth proportional to 87,903.85, 121,307.90 and 47,617.62 is: 65,712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,903.85 : 121,307.90 = 47,617.62 : x
  2. Step 2: Convert to fraction form
    87,903.85/121,307.90 = 47,617.62/x
  3. Step 3: Cross multiply
    87,903.85x = 121,307.90 × 47,617.62
  4. Step 4: Simplify right side
    87,903.85x = 5,776,392,970.77
  5. Step 5: Solve for x
    x = 5,776,392,970.77/87,903.85
  6. Step 6: Final answer
    x = 65,712.63

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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.