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Finding the Fourth Proportional to 74,689.91, 103,077.17 and 45,630.71

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Solution

The fourth proportional to 74,689.91, 103,077.17 and 45,630.71 is: 62,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,689.91 : 103,077.17 = 45,630.71 : x
  2. Step 2: Convert to fraction form
    74,689.91/103,077.17 = 45,630.71/x
  3. Step 3: Cross multiply
    74,689.91x = 103,077.17 × 45,630.71
  4. Step 4: Simplify right side
    74,689.91x = 4,703,483,708.35
  5. Step 5: Solve for x
    x = 4,703,483,708.35/74,689.91
  6. Step 6: Final answer
    x = 62,973.49

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1.5x scale

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.