Home / 86,118.09-118,862.96-54,330.45

Finding the Fourth Proportional to 86,118.09, 118,862.96 and 54,330.45

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Solution

The fourth proportional to 86,118.09, 118,862.96 and 54,330.45 is: 74,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,118.09 : 118,862.96 = 54,330.45 : x
  2. Step 2: Convert to fraction form
    86,118.09/118,862.96 = 54,330.45/x
  3. Step 3: Cross multiply
    86,118.09x = 118,862.96 × 54,330.45
  4. Step 4: Simplify right side
    86,118.09x = 6,457,877,833.48
  5. Step 5: Solve for x
    x = 6,457,877,833.48/86,118.09
  6. Step 6: Final answer
    x = 74,988.63

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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.