Home / 42,018.32-57,985.01-23,155.46

Finding the Fourth Proportional to 42,018.32, 57,985.01 and 23,155.46

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Solution

The fourth proportional to 42,018.32, 57,985.01 and 23,155.46 is: 31,954.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,018.32 : 57,985.01 = 23,155.46 : x
  2. Step 2: Convert to fraction form
    42,018.32/57,985.01 = 23,155.46/x
  3. Step 3: Cross multiply
    42,018.32x = 57,985.01 × 23,155.46
  4. Step 4: Simplify right side
    42,018.32x = 1,342,669,463.88
  5. Step 5: Solve for x
    x = 1,342,669,463.88/42,018.32
  6. Step 6: Final answer
    x = 31,954.38

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Double scale
Find fourth proportional to 42,019.32, 57,986.38 and 23,156.46
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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.