Home / 97,854.50-135,039.20-55,421.23

Finding the Fourth Proportional to 97,854.50, 135,039.20 and 55,421.23

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Solution

The fourth proportional to 97,854.50, 135,039.20 and 55,421.23 is: 76,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,854.50 : 135,039.20 = 55,421.23 : x
  2. Step 2: Convert to fraction form
    97,854.50/135,039.20 = 55,421.23/x
  3. Step 3: Cross multiply
    97,854.50x = 135,039.20 × 55,421.23
  4. Step 4: Simplify right side
    97,854.50x = 7,484,037,947.51
  5. Step 5: Solve for x
    x = 7,484,037,947.51/97,854.50
  6. Step 6: Final answer
    x = 76,481.29

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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.