Home / 86,943.50-119,979.73-51,135.71

Finding the Fourth Proportional to 86,943.50, 119,979.73 and 51,135.71

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Solution

The fourth proportional to 86,943.50, 119,979.73 and 51,135.71 is: 70,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,943.50 : 119,979.73 = 51,135.71 : x
  2. Step 2: Convert to fraction form
    86,943.50/119,979.73 = 51,135.71/x
  3. Step 3: Cross multiply
    86,943.50x = 119,979.73 × 51,135.71
  4. Step 4: Simplify right side
    86,943.50x = 6,135,248,143.18
  5. Step 5: Solve for x
    x = 6,135,248,143.18/86,943.50
  6. Step 6: Final answer
    x = 70,565.92

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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.