Home / 74,555.15-102,888.95-42,730.20

Finding the Fourth Proportional to 74,555.15, 102,888.95 and 42,730.20

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Solution

The fourth proportional to 74,555.15, 102,888.95 and 42,730.20 is: 58,969.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,555.15 : 102,888.95 = 42,730.20 : x
  2. Step 2: Convert to fraction form
    74,555.15/102,888.95 = 42,730.20/x
  3. Step 3: Cross multiply
    74,555.15x = 102,888.95 × 42,730.20
  4. Step 4: Simplify right side
    74,555.15x = 4,396,465,197.64
  5. Step 5: Solve for x
    x = 4,396,465,197.64/74,555.15
  6. Step 6: Final answer
    x = 58,969.31

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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.