Home / 76,489.60-105,554.96-42,498.16

Finding the Fourth Proportional to 76,489.60, 105,554.96 and 42,498.16

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Solution

The fourth proportional to 76,489.60, 105,554.96 and 42,498.16 is: 58,647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,489.60 : 105,554.96 = 42,498.16 : x
  2. Step 2: Convert to fraction form
    76,489.60/105,554.96 = 42,498.16/x
  3. Step 3: Cross multiply
    76,489.60x = 105,554.96 × 42,498.16
  4. Step 4: Simplify right side
    76,489.60x = 4,485,891,578.87
  5. Step 5: Solve for x
    x = 4,485,891,578.87/76,489.60
  6. Step 6: Final answer
    x = 58,647.08

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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.