Home / 90,712.16-125,085.12-56,708.24

Finding the Fourth Proportional to 90,712.16, 125,085.12 and 56,708.24

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Solution

The fourth proportional to 90,712.16, 125,085.12 and 56,708.24 is: 78,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,712.16 : 125,085.12 = 56,708.24 : x
  2. Step 2: Convert to fraction form
    90,712.16/125,085.12 = 56,708.24/x
  3. Step 3: Cross multiply
    90,712.16x = 125,085.12 × 56,708.24
  4. Step 4: Simplify right side
    90,712.16x = 7,093,357,005.39
  5. Step 5: Solve for x
    x = 7,093,357,005.39/90,712.16
  6. Step 6: Final answer
    x = 78,196.32

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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.