Home / 87,703.98-121,031.50-47,417.72

Finding the Fourth Proportional to 87,703.98, 121,031.50 and 47,417.72

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Solution

The fourth proportional to 87,703.98, 121,031.50 and 47,417.72 is: 65,436.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.98 : 121,031.50 = 47,417.72 : x
  2. Step 2: Convert to fraction form
    87,703.98/121,031.50 = 47,417.72/x
  3. Step 3: Cross multiply
    87,703.98x = 121,031.50 × 47,417.72
  4. Step 4: Simplify right side
    87,703.98x = 5,739,037,778.18
  5. Step 5: Solve for x
    x = 5,739,037,778.18/87,703.98
  6. Step 6: Final answer
    x = 65,436.46

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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.