Home / 40,117.36-55,368.48-38,345.64

Finding the Fourth Proportional to 40,117.36, 55,368.48 and 38,345.64

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Solution

The fourth proportional to 40,117.36, 55,368.48 and 38,345.64 is: 52,923.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,117.36 : 55,368.48 = 38,345.64 : x
  2. Step 2: Convert to fraction form
    40,117.36/55,368.48 = 38,345.64/x
  3. Step 3: Cross multiply
    40,117.36x = 55,368.48 × 38,345.64
  4. Step 4: Simplify right side
    40,117.36x = 2,123,139,801.43
  5. Step 5: Solve for x
    x = 2,123,139,801.43/40,117.36
  6. Step 6: Final answer
    x = 52,923.22

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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.