Home / 76,890.08-106,108.80-42,900.64

Finding the Fourth Proportional to 76,890.08, 106,108.80 and 42,900.64

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Solution

The fourth proportional to 76,890.08, 106,108.80 and 42,900.64 is: 59,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.08 : 106,108.80 = 42,900.64 : x
  2. Step 2: Convert to fraction form
    76,890.08/106,108.80 = 42,900.64/x
  3. Step 3: Cross multiply
    76,890.08x = 106,108.80 × 42,900.64
  4. Step 4: Simplify right side
    76,890.08x = 4,552,135,429.63
  5. Step 5: Solve for x
    x = 4,552,135,429.63/76,890.08
  6. Step 6: Final answer
    x = 59,203.16

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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.