Home / 42,864.12-59,126.71-28,328.40

Finding the Fourth Proportional to 42,864.12, 59,126.71 and 28,328.40

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Solution

The fourth proportional to 42,864.12, 59,126.71 and 28,328.40 is: 39,076.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,864.12 : 59,126.71 = 28,328.40 : x
  2. Step 2: Convert to fraction form
    42,864.12/59,126.71 = 28,328.40/x
  3. Step 3: Cross multiply
    42,864.12x = 59,126.71 × 28,328.40
  4. Step 4: Simplify right side
    42,864.12x = 1,674,965,239.38
  5. Step 5: Solve for x
    x = 1,674,965,239.38/42,864.12
  6. Step 6: Final answer
    x = 39,076.16

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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.