Home / 85,297.36-117,760.08-56,655.76

Finding the Fourth Proportional to 85,297.36, 117,760.08 and 56,655.76

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Solution

The fourth proportional to 85,297.36, 117,760.08 and 56,655.76 is: 78,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.36 : 117,760.08 = 56,655.76 : x
  2. Step 2: Convert to fraction form
    85,297.36/117,760.08 = 56,655.76/x
  3. Step 3: Cross multiply
    85,297.36x = 117,760.08 × 56,655.76
  4. Step 4: Simplify right side
    85,297.36x = 6,671,786,830.06
  5. Step 5: Solve for x
    x = 6,671,786,830.06/85,297.36
  6. Step 6: Final answer
    x = 78,217.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.