Home / 87,690.01-121,012.06-47,403.80

Finding the Fourth Proportional to 87,690.01, 121,012.06 and 47,403.80

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Solution

The fourth proportional to 87,690.01, 121,012.06 and 47,403.80 is: 65,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.01 : 121,012.06 = 47,403.80 : x
  2. Step 2: Convert to fraction form
    87,690.01/121,012.06 = 47,403.80/x
  3. Step 3: Cross multiply
    87,690.01x = 121,012.06 × 47,403.80
  4. Step 4: Simplify right side
    87,690.01x = 5,736,431,489.83
  5. Step 5: Solve for x
    x = 5,736,431,489.83/87,690.01
  6. Step 6: Final answer
    x = 65,417.16

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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.