Home / 90,009.51-135,013.77-36,701.28

Finding the Fourth Proportional to 90,009.51, 135,013.77 and 36,701.28

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Solution

The fourth proportional to 90,009.51, 135,013.77 and 36,701.28 is: 55,051.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,009.51 : 135,013.77 = 36,701.28 : x
  2. Step 2: Convert to fraction form
    90,009.51/135,013.77 = 36,701.28/x
  3. Step 3: Cross multiply
    90,009.51x = 135,013.77 × 36,701.28
  4. Step 4: Simplify right side
    90,009.51x = 4,955,178,176.63
  5. Step 5: Solve for x
    x = 4,955,178,176.63/90,009.51
  6. Step 6: Final answer
    x = 55,051.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.