Home / 85,730.16-128,548.26-26,549.40

Finding the Fourth Proportional to 85,730.16, 128,548.26 and 26,549.40

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Solution

The fourth proportional to 85,730.16, 128,548.26 and 26,549.40 is: 39,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,730.16 : 128,548.26 = 26,549.40 : x
  2. Step 2: Convert to fraction form
    85,730.16/128,548.26 = 26,549.40/x
  3. Step 3: Cross multiply
    85,730.16x = 128,548.26 × 26,549.40
  4. Step 4: Simplify right side
    85,730.16x = 3,412,879,174.04
  5. Step 5: Solve for x
    x = 3,412,879,174.04/85,730.16
  6. Step 6: Final answer
    x = 39,809.55

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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.