Home / 74,555.89-102,889.59-42,730.90

Finding the Fourth Proportional to 74,555.89, 102,889.59 and 42,730.90

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Solution

The fourth proportional to 74,555.89, 102,889.59 and 42,730.90 is: 58,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,555.89 : 102,889.59 = 42,730.90 : x
  2. Step 2: Convert to fraction form
    74,555.89/102,889.59 = 42,730.90/x
  3. Step 3: Cross multiply
    74,555.89x = 102,889.59 × 42,730.90
  4. Step 4: Simplify right side
    74,555.89x = 4,396,564,781.33
  5. Step 5: Solve for x
    x = 4,396,564,781.33/74,555.89
  6. Step 6: Final answer
    x = 58,970.05

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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.