Home / 76,786.32-105,967.08-42,332.16

Finding the Fourth Proportional to 76,786.32, 105,967.08 and 42,332.16

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Solution

The fourth proportional to 76,786.32, 105,967.08 and 42,332.16 is: 58,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,786.32 : 105,967.08 = 42,332.16 : x
  2. Step 2: Convert to fraction form
    76,786.32/105,967.08 = 42,332.16/x
  3. Step 3: Cross multiply
    76,786.32x = 105,967.08 × 42,332.16
  4. Step 4: Simplify right side
    76,786.32x = 4,485,815,385.29
  5. Step 5: Solve for x
    x = 4,485,815,385.29/76,786.32
  6. Step 6: Final answer
    x = 58,419.46

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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.