Home / 85,451.84-128,178.08-26,287.10

Finding the Fourth Proportional to 85,451.84, 128,178.08 and 26,287.10

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Solution

The fourth proportional to 85,451.84, 128,178.08 and 26,287.10 is: 39,430.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.84 : 128,178.08 = 26,287.10 : x
  2. Step 2: Convert to fraction form
    85,451.84/128,178.08 = 26,287.10/x
  3. Step 3: Cross multiply
    85,451.84x = 128,178.08 × 26,287.10
  4. Step 4: Simplify right side
    85,451.84x = 3,369,430,006.77
  5. Step 5: Solve for x
    x = 3,369,430,006.77/85,451.84
  6. Step 6: Final answer
    x = 39,430.75

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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.