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Finding the Fourth Proportional to 94,005.78, 129,719.76 and 53,711.52

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Solution

The fourth proportional to 94,005.78, 129,719.76 and 53,711.52 is: 74,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,005.78 : 129,719.76 = 53,711.52 : x
  2. Step 2: Convert to fraction form
    94,005.78/129,719.76 = 53,711.52/x
  3. Step 3: Cross multiply
    94,005.78x = 129,719.76 × 53,711.52
  4. Step 4: Simplify right side
    94,005.78x = 6,967,445,483.64
  5. Step 5: Solve for x
    x = 6,967,445,483.64/94,005.78
  6. Step 6: Final answer
    x = 74,117.20

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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.