Home / 90,512.92-124,987.18-56,579.40

Finding the Fourth Proportional to 90,512.92, 124,987.18 and 56,579.40

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Solution

The fourth proportional to 90,512.92, 124,987.18 and 56,579.40 is: 78,129.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,512.92 : 124,987.18 = 56,579.40 : x
  2. Step 2: Convert to fraction form
    90,512.92/124,987.18 = 56,579.40/x
  3. Step 3: Cross multiply
    90,512.92x = 124,987.18 × 56,579.40
  4. Step 4: Simplify right side
    90,512.92x = 7,071,699,652.09
  5. Step 5: Solve for x
    x = 7,071,699,652.09/90,512.92
  6. Step 6: Final answer
    x = 78,129.17

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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.