Home / 87,703.83-121,031.28-47,417.58

Finding the Fourth Proportional to 87,703.83, 121,031.28 and 47,417.58

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Solution

The fourth proportional to 87,703.83, 121,031.28 and 47,417.58 is: 65,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.83 : 121,031.28 = 47,417.58 : x
  2. Step 2: Convert to fraction form
    87,703.83/121,031.28 = 47,417.58/x
  3. Step 3: Cross multiply
    87,703.83x = 121,031.28 × 47,417.58
  4. Step 4: Simplify right side
    87,703.83x = 5,739,009,861.46
  5. Step 5: Solve for x
    x = 5,739,009,861.46/87,703.83
  6. Step 6: Final answer
    x = 65,436.25

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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.