Home / 78,587.48-117,880.07-19,423.16

Finding the Fourth Proportional to 78,587.48, 117,880.07 and 19,423.16

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Solution

The fourth proportional to 78,587.48, 117,880.07 and 19,423.16 is: 29,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,587.48 : 117,880.07 = 19,423.16 : x
  2. Step 2: Convert to fraction form
    78,587.48/117,880.07 = 19,423.16/x
  3. Step 3: Cross multiply
    78,587.48x = 117,880.07 × 19,423.16
  4. Step 4: Simplify right side
    78,587.48x = 2,289,602,773.91
  5. Step 5: Solve for x
    x = 2,289,602,773.91/78,587.48
  6. Step 6: Final answer
    x = 29,134.45

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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.