Home / 78,427.53-117,641.69-19,263.21

Finding the Fourth Proportional to 78,427.53, 117,641.69 and 19,263.21

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Solution

The fourth proportional to 78,427.53, 117,641.69 and 19,263.21 is: 28,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.53 : 117,641.69 = 19,263.21 : x
  2. Step 2: Convert to fraction form
    78,427.53/117,641.69 = 19,263.21/x
  3. Step 3: Cross multiply
    78,427.53x = 117,641.69 × 19,263.21
  4. Step 4: Simplify right side
    78,427.53x = 2,266,156,482.91
  5. Step 5: Solve for x
    x = 2,266,156,482.91/78,427.53
  6. Step 6: Final answer
    x = 28,894.91

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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.