Home / 97,890.15-135,088.40-55,448.69

Finding the Fourth Proportional to 97,890.15, 135,088.40 and 55,448.69

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Solution

The fourth proportional to 97,890.15, 135,088.40 and 55,448.69 is: 76,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,890.15 : 135,088.40 = 55,448.69 : x
  2. Step 2: Convert to fraction form
    97,890.15/135,088.40 = 55,448.69/x
  3. Step 3: Cross multiply
    97,890.15x = 135,088.40 × 55,448.69
  4. Step 4: Simplify right side
    97,890.15x = 7,490,474,814.20
  5. Step 5: Solve for x
    x = 7,490,474,814.20/97,890.15
  6. Step 6: Final answer
    x = 76,519.19

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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.