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Finding the Fourth Proportional to 90,836.40, 136,254.60 and 46,448.40

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Solution

The fourth proportional to 90,836.40, 136,254.60 and 46,448.40 is: 69,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.40 : 136,254.60 = 46,448.40 : x
  2. Step 2: Convert to fraction form
    90,836.40/136,254.60 = 46,448.40/x
  3. Step 3: Cross multiply
    90,836.40x = 136,254.60 × 46,448.40
  4. Step 4: Simplify right side
    90,836.40x = 6,328,808,162.64
  5. Step 5: Solve for x
    x = 6,328,808,162.64/90,836.40
  6. Step 6: Final answer
    x = 69,672.60

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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.