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Finding the Fourth Proportional to 42,905.80, 59,209.92 and 26,138.80

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Solution

The fourth proportional to 42,905.80, 59,209.92 and 26,138.80 is: 36,071.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,905.80 : 59,209.92 = 26,138.80 : x
  2. Step 2: Convert to fraction form
    42,905.80/59,209.92 = 26,138.80/x
  3. Step 3: Cross multiply
    42,905.80x = 59,209.92 × 26,138.80
  4. Step 4: Simplify right side
    42,905.80x = 1,547,676,256.90
  5. Step 5: Solve for x
    x = 1,547,676,256.90/42,905.80
  6. Step 6: Final answer
    x = 36,071.49

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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.