Home / 90,021.60-135,032.40-58,687.20

Finding the Fourth Proportional to 90,021.60, 135,032.40 and 58,687.20

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Solution

The fourth proportional to 90,021.60, 135,032.40 and 58,687.20 is: 88,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.60 : 135,032.40 = 58,687.20 : x
  2. Step 2: Convert to fraction form
    90,021.60/135,032.40 = 58,687.20/x
  3. Step 3: Cross multiply
    90,021.60x = 135,032.40 × 58,687.20
  4. Step 4: Simplify right side
    90,021.60x = 7,924,673,465.28
  5. Step 5: Solve for x
    x = 7,924,673,465.28/90,021.60
  6. Step 6: Final answer
    x = 88,030.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.