Home / 42,578.08-58,815.12-38,603.68

Finding the Fourth Proportional to 42,578.08, 58,815.12 and 38,603.68

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Solution

The fourth proportional to 42,578.08, 58,815.12 and 38,603.68 is: 53,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,578.08 : 58,815.12 = 38,603.68 : x
  2. Step 2: Convert to fraction form
    42,578.08/58,815.12 = 38,603.68/x
  3. Step 3: Cross multiply
    42,578.08x = 58,815.12 × 38,603.68
  4. Step 4: Simplify right side
    42,578.08x = 2,270,480,071.64
  5. Step 5: Solve for x
    x = 2,270,480,071.64/42,578.08
  6. Step 6: Final answer
    x = 53,325.09

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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.