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Finding the Fourth Proportional to 66,273.52, 99,279.08 and 42,916.40

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Solution

The fourth proportional to 66,273.52, 99,279.08 and 42,916.40 is: 64,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,273.52 : 99,279.08 = 42,916.40 : x
  2. Step 2: Convert to fraction form
    66,273.52/99,279.08 = 42,916.40/x
  3. Step 3: Cross multiply
    66,273.52x = 99,279.08 × 42,916.40
  4. Step 4: Simplify right side
    66,273.52x = 4,260,700,708.91
  5. Step 5: Solve for x
    x = 4,260,700,708.91/66,273.52
  6. Step 6: Final answer
    x = 64,289.64

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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.