Home / 85,637.66-128,409.33-26,456.90

Finding the Fourth Proportional to 85,637.66, 128,409.33 and 26,456.90

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Solution

The fourth proportional to 85,637.66, 128,409.33 and 26,456.90 is: 39,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,637.66 : 128,409.33 = 26,456.90 : x
  2. Step 2: Convert to fraction form
    85,637.66/128,409.33 = 26,456.90/x
  3. Step 3: Cross multiply
    85,637.66x = 128,409.33 × 26,456.90
  4. Step 4: Simplify right side
    85,637.66x = 3,397,312,802.88
  5. Step 5: Solve for x
    x = 3,397,312,802.88/85,637.66
  6. Step 6: Final answer
    x = 39,670.78

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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.