Home / 85,585.86-128,391.09-26,426.10

Finding the Fourth Proportional to 85,585.86, 128,391.09 and 26,426.10

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Solution

The fourth proportional to 85,585.86, 128,391.09 and 26,426.10 is: 39,642.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,585.86 : 128,391.09 = 26,426.10 : x
  2. Step 2: Convert to fraction form
    85,585.86/128,391.09 = 26,426.10/x
  3. Step 3: Cross multiply
    85,585.86x = 128,391.09 × 26,426.10
  4. Step 4: Simplify right side
    85,585.86x = 3,392,875,783.45
  5. Step 5: Solve for x
    x = 3,392,875,783.45/85,585.86
  6. Step 6: Final answer
    x = 39,642.95

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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.