Home / 85,559.04-128,339.16-26,393.40

Finding the Fourth Proportional to 85,559.04, 128,339.16 and 26,393.40

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Solution

The fourth proportional to 85,559.04, 128,339.16 and 26,393.40 is: 39,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,559.04 : 128,339.16 = 26,393.40 : x
  2. Step 2: Convert to fraction form
    85,559.04/128,339.16 = 26,393.40/x
  3. Step 3: Cross multiply
    85,559.04x = 128,339.16 × 26,393.40
  4. Step 4: Simplify right side
    85,559.04x = 3,387,306,785.54
  5. Step 5: Solve for x
    x = 3,387,306,785.54/85,559.04
  6. Step 6: Final answer
    x = 39,590.29

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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.