Home / 90,637.16-125,139.54-56,696.84

Finding the Fourth Proportional to 90,637.16, 125,139.54 and 56,696.84

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Solution

The fourth proportional to 90,637.16, 125,139.54 and 56,696.84 is: 78,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,637.16 : 125,139.54 = 56,696.84 : x
  2. Step 2: Convert to fraction form
    90,637.16/125,139.54 = 56,696.84/x
  3. Step 3: Cross multiply
    90,637.16x = 125,139.54 × 56,696.84
  4. Step 4: Simplify right side
    90,637.16x = 7,095,016,477.05
  5. Step 5: Solve for x
    x = 7,095,016,477.05/90,637.16
  6. Step 6: Final answer
    x = 78,279.33

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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.