Home / 85,545.92-128,341.02-26,380.28

Finding the Fourth Proportional to 85,545.92, 128,341.02 and 26,380.28

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Solution

The fourth proportional to 85,545.92, 128,341.02 and 26,380.28 is: 39,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,545.92 : 128,341.02 = 26,380.28 : x
  2. Step 2: Convert to fraction form
    85,545.92/128,341.02 = 26,380.28/x
  3. Step 3: Cross multiply
    85,545.92x = 128,341.02 × 26,380.28
  4. Step 4: Simplify right side
    85,545.92x = 3,385,672,043.09
  5. Step 5: Solve for x
    x = 3,385,672,043.09/85,545.92
  6. Step 6: Final answer
    x = 39,577.25

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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.