Home / 85,508.40-128,276.64-26,344.08

Finding the Fourth Proportional to 85,508.40, 128,276.64 and 26,344.08

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Solution

The fourth proportional to 85,508.40, 128,276.64 and 26,344.08 is: 39,520.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508.40 : 128,276.64 = 26,344.08 : x
  2. Step 2: Convert to fraction form
    85,508.40/128,276.64 = 26,344.08/x
  3. Step 3: Cross multiply
    85,508.40x = 128,276.64 × 26,344.08
  4. Step 4: Simplify right side
    85,508.40x = 3,379,330,066.29
  5. Step 5: Solve for x
    x = 3,379,330,066.29/85,508.40
  6. Step 6: Final answer
    x = 39,520.45

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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.