Home / 76,976.63-106,226.59-42,985.64

Finding the Fourth Proportional to 76,976.63, 106,226.59 and 42,985.64

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Solution

The fourth proportional to 76,976.63, 106,226.59 and 42,985.64 is: 59,319.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,976.63 : 106,226.59 = 42,985.64 : x
  2. Step 2: Convert to fraction form
    76,976.63/106,226.59 = 42,985.64/x
  3. Step 3: Cross multiply
    76,976.63x = 106,226.59 × 42,985.64
  4. Step 4: Simplify right side
    76,976.63x = 4,566,217,597.34
  5. Step 5: Solve for x
    x = 4,566,217,597.34/76,976.63
  6. Step 6: Final answer
    x = 59,319.53

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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.