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Finding the Fourth Proportional to 74,689.04, 103,077.96 and 42,865.04

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Solution

The fourth proportional to 74,689.04, 103,077.96 and 42,865.04 is: 59,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,689.04 : 103,077.96 = 42,865.04 : x
  2. Step 2: Convert to fraction form
    74,689.04/103,077.96 = 42,865.04/x
  3. Step 3: Cross multiply
    74,689.04x = 103,077.96 × 42,865.04
  4. Step 4: Simplify right side
    74,689.04x = 4,418,440,878.52
  5. Step 5: Solve for x
    x = 4,418,440,878.52/74,689.04
  6. Step 6: Final answer
    x = 59,157.82

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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.