Home / 90,297.12-124,671.60-56,318.88

Finding the Fourth Proportional to 90,297.12, 124,671.60 and 56,318.88

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Solution

The fourth proportional to 90,297.12, 124,671.60 and 56,318.88 is: 77,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,297.12 : 124,671.60 = 56,318.88 : x
  2. Step 2: Convert to fraction form
    90,297.12/124,671.60 = 56,318.88/x
  3. Step 3: Cross multiply
    90,297.12x = 124,671.60 × 56,318.88
  4. Step 4: Simplify right side
    90,297.12x = 7,021,364,879.81
  5. Step 5: Solve for x
    x = 7,021,364,879.81/90,297.12
  6. Step 6: Final answer
    x = 77,758.46

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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.