Home / 85,418.15-128,127.67-56,022.13

Finding the Fourth Proportional to 85,418.15, 128,127.67 and 56,022.13

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Solution

The fourth proportional to 85,418.15, 128,127.67 and 56,022.13 is: 84,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.15 : 128,127.67 = 56,022.13 : x
  2. Step 2: Convert to fraction form
    85,418.15/128,127.67 = 56,022.13/x
  3. Step 3: Cross multiply
    85,418.15x = 128,127.67 × 56,022.13
  4. Step 4: Simplify right side
    85,418.15x = 7,177,985,320.57
  5. Step 5: Solve for x
    x = 7,177,985,320.57/85,418.15
  6. Step 6: Final answer
    x = 84,033.50

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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.