Home / 86,970.51-120,036.33-51,191.19

Finding the Fourth Proportional to 86,970.51, 120,036.33 and 51,191.19

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Solution

The fourth proportional to 86,970.51, 120,036.33 and 51,191.19 is: 70,653.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,970.51 : 120,036.33 = 51,191.19 : x
  2. Step 2: Convert to fraction form
    86,970.51/120,036.33 = 51,191.19/x
  3. Step 3: Cross multiply
    86,970.51x = 120,036.33 × 51,191.19
  4. Step 4: Simplify right side
    86,970.51x = 6,144,802,575.93
  5. Step 5: Solve for x
    x = 6,144,802,575.93/86,970.51
  6. Step 6: Final answer
    x = 70,653.86

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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.