Home / 86,030.64-118,735.20-61,911.45

Finding the Fourth Proportional to 86,030.64, 118,735.20 and 61,911.45

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Solution

The fourth proportional to 86,030.64, 118,735.20 and 61,911.45 is: 85,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,030.64 : 118,735.20 = 61,911.45 : x
  2. Step 2: Convert to fraction form
    86,030.64/118,735.20 = 61,911.45/x
  3. Step 3: Cross multiply
    86,030.64x = 118,735.20 × 61,911.45
  4. Step 4: Simplify right side
    86,030.64x = 7,351,068,398.04
  5. Step 5: Solve for x
    x = 7,351,068,398.04/86,030.64
  6. Step 6: Final answer
    x = 85,447.10

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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.