Home / 85,629.37-118,129.10-55,424.39

Finding the Fourth Proportional to 85,629.37, 118,129.10 and 55,424.39

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Solution

The fourth proportional to 85,629.37, 118,129.10 and 55,424.39 is: 76,460.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,629.37 : 118,129.10 = 55,424.39 : x
  2. Step 2: Convert to fraction form
    85,629.37/118,129.10 = 55,424.39/x
  3. Step 3: Cross multiply
    85,629.37x = 118,129.10 × 55,424.39
  4. Step 4: Simplify right side
    85,629.37x = 6,547,233,017.28
  5. Step 5: Solve for x
    x = 6,547,233,017.28/85,629.37
  6. Step 6: Final answer
    x = 76,460.14

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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.