Home / 87,980.08-121,411.02-49,739.05

Finding the Fourth Proportional to 87,980.08, 121,411.02 and 49,739.05

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Solution

The fourth proportional to 87,980.08, 121,411.02 and 49,739.05 is: 68,639.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,980.08 : 121,411.02 = 49,739.05 : x
  2. Step 2: Convert to fraction form
    87,980.08/121,411.02 = 49,739.05/x
  3. Step 3: Cross multiply
    87,980.08x = 121,411.02 × 49,739.05
  4. Step 4: Simplify right side
    87,980.08x = 6,038,868,794.33
  5. Step 5: Solve for x
    x = 6,038,868,794.33/87,980.08
  6. Step 6: Final answer
    x = 68,639.05

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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.