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Finding the Fourth Proportional to 90,276.30, 135,414.45 and 64,032.30

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Solution

The fourth proportional to 90,276.30, 135,414.45 and 64,032.30 is: 96,048.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,276.30 : 135,414.45 = 64,032.30 : x
  2. Step 2: Convert to fraction form
    90,276.30/135,414.45 = 64,032.30/x
  3. Step 3: Cross multiply
    90,276.30x = 135,414.45 × 64,032.30
  4. Step 4: Simplify right side
    90,276.30x = 8,670,898,686.74
  5. Step 5: Solve for x
    x = 8,670,898,686.74/90,276.30
  6. Step 6: Final answer
    x = 96,048.45

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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.