Home / 78,214.84-117,252.09-28,283.20

Finding the Fourth Proportional to 78,214.84, 117,252.09 and 28,283.20

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Solution

The fourth proportional to 78,214.84, 117,252.09 and 28,283.20 is: 42,399.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.84 : 117,252.09 = 28,283.20 : x
  2. Step 2: Convert to fraction form
    78,214.84/117,252.09 = 28,283.20/x
  3. Step 3: Cross multiply
    78,214.84x = 117,252.09 × 28,283.20
  4. Step 4: Simplify right side
    78,214.84x = 3,316,264,018.76
  5. Step 5: Solve for x
    x = 3,316,264,018.76/78,214.84
  6. Step 6: Final answer
    x = 42,399.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.