Home / 86,009.60-118,699.08-64,755.20

Finding the Fourth Proportional to 86,009.60, 118,699.08 and 64,755.20

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Solution

The fourth proportional to 86,009.60, 118,699.08 and 64,755.20 is: 89,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,009.60 : 118,699.08 = 64,755.20 : x
  2. Step 2: Convert to fraction form
    86,009.60/118,699.08 = 64,755.20/x
  3. Step 3: Cross multiply
    86,009.60x = 118,699.08 × 64,755.20
  4. Step 4: Simplify right side
    86,009.60x = 7,686,382,665.22
  5. Step 5: Solve for x
    x = 7,686,382,665.22/86,009.60
  6. Step 6: Final answer
    x = 89,366.57

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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.